Answer: he presence of neotenic populations near those with large larvae has made it difficult to identify mole salamander species. The tiger salamander complex was previously considered a single species ranging from Canada to Mexico, falling under the name A. tigrinum. Despite differences in coloration and larvae, tiger salamanders were found throughout their unbroken range, which made it difficult to delineate subspecies, let alone elevate any populations to species status. In morphological terms, tiger salamanders are all very similar, with large heads, small eyes, and thick bodies. This is probably because tiger salamanders have the primitive morphology of mole salamanders. They are also the largest of the mole salamanders and have very large larvae. All populations have similar lifestyles, and their lifecycles are identical. However, when one looks at tiger salamander populations distant from each other, different species within this complex become apparent. The ranges of these potential species overlap, and hybridization occurs, blurring the lines between species.
Explanation:
Answer:ur mum
Explanation:
On the basis of energy requirement, which does NOT belong to the group? The Na/k pump. Pure water rushing into celery stalks and bulking them up. GLUTS moving glucose molecules from the bloodstream into cells.
Pure water rushing into celery stalks and bulking them up does not belong to the group, as it does not require energy.
What are the basis of energy requirement?The Na/K pump and GLUTS both require energy to move molecules against their concentration gradients. The Na/K pump uses ATP to move three sodium ions out of the cell and two potassium ions into the cell, while GLUTS use ATP to transport glucose molecules from an area of lower concentration (the bloodstream) to an area of higher concentration (inside the cell). In contrast, water moving into celery stalks occurs through osmosis, which does not require energy.
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why are accurate measurements necessary in scientific research?
Accurate measurements are necessary in scientific research to present correct findings and to prevent erroneous conclusion.
Accuracy in scientific research tells us how close the measured value is to its true value. This represents the relationship between the correct value and the measured value. This is very important in research because inaccurate values give widespread results. It also leads to an erroneous conclusion for the observation made by the researcher.
This helps the researcher's ability to reproduce other people's experiments and contrast their results with earlier, published research. Also, it helps the researcher in providing correct findings and theory recommendations.
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in some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of _____ allows gene flow to occur between _____ that can be easily distinguished based on appearance.
For speciation to happen, a populace should be reproductively apart. Regenerative disengagement implies that the first populace should part into at least two groups that never again interbreed. The correct answer is (D) hybridization; morphospecies
Allopatric speciation happens without even a trace of the quality stream and sympatric speciation within the sight of a quality stream.
As indicated by the natural species idea, speciation is the arrangement of at least one new animal category through regenerative disengagement. The idea of natural species characterizes individuals from animal categories effectively interbreed and deliver prolific posterity.
The Natural Species Idea. The natural species idea was first proposed by Ernst Mayr, who characterized animal categories collectively of really or possibly interbreeding regular populaces, which are reproductively disconnected from other such gatherings.
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Q- In some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of _____ allows gene flow to occur between good _____ that can be easily distinguished based on appearance.
A. polyploidy; evolutionary species
B. allopatric speciation; ring species
C. hybridization; ecological species
D. hybridization; morphospecies
E. polyploidy; ring species
Corals reproduce by forming multicellular outgrowths from the body wall that detach and develop into independent organisms. Which statement most closely describes this form of reproduction in another organism?
Maple trees reproduce by seed formation is the statement which most closely describes this form of reproduction in another organism
Describe reproduction.Reproduction is the process of producing descendants. The two basic types of reproduction are sexual and asexual. A sexually reproducing organism contains both of its parents' genetic material and is genetically unique. Genetically identical children are produced through asexual reproduction by needing one parent repeat itself.
Types of plant reproductionAsexual and sexual reproduction are the two methods of reproduction in plants. Asexual reproduction can occur through a number of processes, including fragmentation, budding, spore development, and vegetative propagation. In order to reproduce sexually, male & female gametes must fuse.
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What are the 7 main parts of a plant cell?
The seven main parts of the plant cell include the cell wall, cell membrane, nucleus, central vacuole, mitochondria, ribosomes and plastids.
The plant cells are eukaryotic cells which have a well-defined structure as well as a well defined and a membrane bound nucleus. The plant cells, unlike the animal cells, contain a rigid cell wall which basically gives the cell its shape and has a protective function. The cell membrane is very useful for transport.
The major area space of the cell is taken up by the large central vacuole, the mitochondria produces the energy, the ribosomes synthesize proteins and the plastids are involved in the process of photosynthesis.
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bulk flow of fluids are all capillary bed typically occur _________. (choose all)
a) at intercellular clefts
b) ar fenestrations
c) across endothelial cell membrane
d) with the help of transport proteins
The bulk flow of fluids that occurs in capillary beds typically occurs across endothelial cell membranes. Therefore, option (c) is correct.
What is Fluids?
Fluids are substances that have the ability to flow and take the shape of their container. They include both liquids and gases, and are distinguished from solids by their ability to flow and deform in response to external forces.
Liquids are a type of fluid that have a definite volume but no definite shape, and they assume the shape of their container.
Gases are another type of fluid that have no definite shape or volume. They expand to fill their container and are compressible. Examples of gases include air, oxygen, and carbon dioxide.
Fluids play an important role in many biological processes, including blood flow in the circulatory system, digestion of food in the digestive system, and the movement of air in the respiratory system. The study of fluids is an important part of physics, engineering, and other sciences.
Bulk flow of fluids refers to the movement of large amounts of fluid and solutes across capillary walls. This process occurs primarily through a mechanism called filtration and reabsorption. Filtration occurs at the arterial end of the capillary bed, where blood pressure forces fluids and solutes out of the capillary and into the surrounding tissues. Reabsorption occurs at the venous end of the capillary bed, where fluid and solutes are taken back into the capillary from the surrounding tissues due to the osmotic pressure difference.
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erythematous mucosa in the gastric body and antrum is called____
Erythematous mucosa in the gastric body and antrum is called gastritis.
Your digestive tract is lined on the inside with a membrane called mucosa. Redness is erythematous. Thus, having erythematous mucosa suggests that your digestive tract's inner lining is red.
The area of the stomach before the outflow known as the antrum is mucosa-lined and does not create acid.
The lower portion of the stomach, or the antrum, can occasionally be the only area of gastropathy. Gastritis typically affects the entire stomach. Gastritis can be persistent or short-term (acute) (chronic).
Many factors can cause damage to the stomach mucosa, but Helicobacter pylori infection—which affects between 30 and 40 percent of Americans—is the most frequent culprit.
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What is a substance that activates an enzyme?
A substance that activates an enzyme is known as activators. An activator is a molecule that binds to the enzyme and causes it to change conformation, increasing the enzyme's catalytic activity.
Activators can be allosteric or covalent, which means they can bind to a site on the enzyme other than the active site or directly to the active site.
The molecule ATP is an example of an allosteric activator because it binds to the allosteric site of the enzyme phosphofructokinase during glycolysis and increases the enzyme's activity. The enzyme kinase is an example of a covalent activator because it adds a phosphate group to another enzyme, causing a conformational change that activates the enzyme.
Activators regulate enzyme activity in cells and are essential for many biological processes such as metabolism, signal transduction, and gene expression.
In some cases, the substrate may act as a regulatory molecule, influencing enzyme activity, but this is not the same as an activator. Some substrates, for example, may bind to the enzyme's active site and inhibit its activity, whereas others may compete for the active site and reduce the enzyme's efficiency. However, because they do not directly increase the enzyme's activity, these effects are not considered activation.
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Scott is talking to his friends about what he has learned in his psychology class. They want to hear more about the theory of evolution by natural selection. What should Scott tell them is the main idea of the theory of evolution by natural selection?
a. Organisms that are best suited for their environment will wipe out those that are not suited.
b. Organisms that are poorly suited for their environments will change during their early years to be better suited.
c. Organisms that are poorly suited for their environments will change throughout their lives to become better suited.
d. Organisms that are best suited for their environments will prevail in survival and reproduction.
Organisms that are best suited for their environments will prevail in survival and reproduction. Therefore, option (D) is correct.
What is natural selection?
Natural selection is the process by which organisms that are better adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to their offspring. Over time, this can lead to the evolution of new species as the frequency of these traits increases in a population.
This means that individuals that have traits that give them an advantage in their environment, such as better camouflage, stronger immune systems, or more efficient ways of finding food, will be more likely to survive and pass on those advantageous traits to their offspring
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what alternative explanation to natural theology makes the most sense?
Natural selection creates the illusion of design since having one eye is preferable to having none at all.
A type of theology and deism known as natural theology, formerly known as physico-theology, aims to provide arguments for theological subjects (such as the existence of a deity) based on reason and scientific discoveries. Its goal is to prove God's existence through the use of observed so-called natural facts.
The attempt to establish religious truths by reasoned reasoning and without relying on purported revelations is known as natural theology. It has traditionally concentrated on the ideas of God's existence and the soul's immortality.The doctrines of revealed theology must be stated clearly, and this necessitates specifying how.
Natural theology can ask questions that are appropriate and can explore the extent to which there is an element in our understanding of God once revealed theology has stated its teachings plainly in terms of the specific senses in which they are being asserted.
Natural Theology, as we have seen, treats God solely in so far as He is known by the natural reason. The principles from which it derives its conclusions are the intuitions of the mind and the facts of experience.
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what is the molecule that starts the citric acid cycle
Oxaloacetate, which has four carbons, is regenerated at the end of the citric acid cycle, it is called a cycle. The first molecule to form during the processes of the cycle is citrate, or, in its protonated form, citric acid.
This molecule is referred to as the citric acid cycle, which is the name we'll mostly use here. Similar to how pyruvate is converted to acetyl textCoACoAstart text, C, o, A, end text in eukaryotes, the citric acid cycle occurs in the matrix of the mitochondria. These two processes both happen in the cytoplasm of prokaryotes. The final stage of the closed-loop citric acid cycle restores the molecule used in the initial stage.
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how is it possible for one species to produce many other species?
Natural selection offers a explanation for how the genetic characteristics of a species may change through time. This might lead to speciation, or the emergence of new, distinct species.
The species sometimes exists in two (or more) populations, and thus inhibits interbreeding between them. When maintained apart for a long enough time and exposed to a wide enough array of environmental conditions, each population takes its own distinct evolutionary path. New species are produced by speciation, which happens when an ancestor population splits into two or more genetically distinct descendant populations. The process of speciation involves the separation of groups from the original population and the emergence of genetic differences between the two groups. A population is a group of people who are all related.
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during which 3 phases are chromosomes not visible
There are 3 phases in which chromosomes are not visible. They are interphase, cytokinesis, and telophase.
Interphase: A typical cell spends most of its time in this phase. It can be said that the cell remains metabolic phase of the cell, until when the cell obtains nutrients and metabolizes them, and then it grows along with replication of its DNA in preparation for mitosis, and then it does other normal cell functions.
Cytokinesis: It is the final step of cell division. During this phase in which the two daughter cells become physically separated.
Telophase: Telophase is the fifth phase of mitosis. It is the process that generally separates genetic material carried in the nucleus of a parent cell into two identical daughter cells. Telophase occurs when the replicated, paired chromosomes have been separated and they are pulled to opposite poles of the cell.
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new synthetic nucleotides have been inserted into e. coli bacteria to increase the number of they can produce, which can help with the development of new drugs and other applications.A. Adenine, Guanine B. ProteinC. amino acidD. Hydrogen
New synthetic nucleotides have been inserted into e. coli bacteria to increase the number of they can produce, which can help with the development of new drugs and other applications- amino acids
What exactly are synthetic nucleic acids ?
The building blocks for recombinant or synthetic nucleic acids (r/sNA) are created outside of living organisms. They are created by attaching synthetic or natural DNA or RNA segments to DNA or RNA molecules that can reproduce inside of living cells. They could also be the product of previously created recombinant molecules being replicated.
Therapeutic medicines, including a variety of antiviral products used to stop virus replication in infected cells, can make use of nucleoside and nucleotide analogues. These synthetic nucleic acids may even inhibit DNA polymerase activity and are used to investigate DNA polymerase dynamics and specificity. Questions about how various DNA polymerases use nucleotides are now possible thanks to their increasing chemical diversity.
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Why have biologists hypothesized that the first land plants had a low, sprawling growth habit? a. Land animals of that period were small and could not pollinate tall plants. b. These plants lack the vascular tissues (.e.), structural support to stand erect in air. C. There were no available nutrients in the soil d. There was less competition for space so they simply spread out flat.
Correct answer is B. Biologists hypothesized that the first land plants had a low, sprawling growth habit because the ancestors of land plants, green algae, lacked the structural support to stand erect in air.
Around 470 million years ago, during the Ordovician epoch, when life was rapidly diversifying, the first terrestrial plants evolved. They were shallow-rooted non-vascular plants like mosses and liverworts.
A major extinction occurred after around 35 million years, when ice sheets momentarily covered a large portion of the world. Nobody knew why carbon dioxide levels likely dropped significantly right before the ice came.
The liverworts and mosses, according to Tim Lenton of the University of Exeter in the UK and colleagues, are to blame.
It's not the first time that vegetation has been blamed for glacial. Researchers already believe that another cold age was brought on by the emergence of vascular plants in the Devonian epoch, some 100 million years later.
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why is endocrinology not a subspecialty of anatomy
Ten subfields of anatomy: pathological anatomy, radiographic anatomy, gross anatomy, systemic anatomy, developmental biology, cell biology, histology, and regional, surface, and surface and surface anatomy.
The area of physiology known as endocrinology is focused on how the endocrine system and the hormones produced by these glands work. In light of this, endocrinology does not focus on the investigation of how the neurological system or nerve cells operate.
Biology and medicine's field of endocrinology focuses on the endocrine system, disorders that affect it, and the distinct hormone discharges that emerge from it. The integration of developmental processes like proliferation, growth, and differentiation as well as psychological or behavioural actions like metabolism, growth and development, tissue function, sleep, digestion, respiration, excretion, mood, stress, lactation, movement, reproduction, and sensory perception brought on by hormones are also taken into consideration.
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what causes the hemolysis associated with malarial infections?
Hemolytic anaemia causes the hemolysis associated with malarial infections.
The primary cause is non-immune, which relies on the kind of malaria and the parasitemia percentage and is caused by the parasite directly destroying red blood cells (RBCs). Your body can become infected with parasites, viruses, and bacteria, which can harm your red blood cells and cause them to degrade before your body can produce replacements. Red blood cells become infected when the malaria parasites enter the bloodstream from an infectious mosquito bite. Red blood cells burst at the conclusion of that infectious cycle.
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what is big bear hight?
The height of the Big Bear Mountain is 1719 meter.
In Snohomish County, Washington, Big Bear Mountain, a 5,641-foot summit, is situated on the western flank of the North Cascades. Between Liberty Mountain to its south and Three Fingers to its north, it is situated in the middle. The Mount Baker-Snoqualmie National Forest manages the territory where Big Bear Mountain is located in the Boulder River Wilderness.
Western North America's marine west coast climate zone is home to Big Bear Mountain.
The majority of weather fronts move northeastward toward the Cascade Mountains from their Pacific Ocean of origin. As fronts approach the North Cascades, the Cascade Range's peaks push them upward, causing them to release their moisture as rain or snowfall onto the Cascades.
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All individuals in a population have the exact same allele that codes for a give phenotype. Ve=0 for this trait in this population. Given this information, what does h2 equal in this population?
The same allele, which codes for a certain trait, is present in every member of a population. In this population, Ve=0 for this characteristic. In this population, h2 = zero given by this information.
The combination of all the genes (including alleles) found in a population or species that is capable of reproducing is referred to as a gene pool. Allele frequencies will remain constant over generations when a population is in Hardy-Weinberg equilibrium for a gene.
There are five fundamental Hardy-Weinberg presumptions: absence of mutation, asexual reproduction, absence of gene flow, limitless population size, and absence of selection. It is calculated by calculating the number of times the allele occurs in the population and dividing by the sum of all the gene copies.
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Classify each protein example according to its highest level of protein structure: Primary structure, Secondary structure, Tertiary structure, Quaternary structure1) the amino acid sequence of myoglobin2) a single helical chain of collagen3) hemoglobin4) a single hemoglobin subunit with heme
The amino acid sequence of myoglobin is an example of the primary structure. This refers to the linear sequence of amino acids in a protein.
A single helical chain of collagen is an example of a secondary structure. This refers to the local folding or twisting of the protein chain, such as an alpha helix or beta sheet. Hemoglobin is an example of a quaternary structure. This refers to the organization of multiple protein subunits into a functional complex.
A single hemoglobin subunit with heme is an example of a tertiary structure. This refers to the overall 3-dimensional structure of an individual protein molecule.
Understanding protein structure is important because it allows us to predict how proteins behave in different environments and under different conditions. For example, temperature, pH, or salt concentration changes can disrupt the interactions that hold a protein together, causing it to denature or lose shape. This can have important implications for protein function and the health of the organism that relies on the protein.
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Assuming that each possesses a cell wall, which prokaryotes should be expected to be most strongly resistant to plasmolysis in hypertonic environments?
Assuming that each possesses a cell wall, extreme halophiles should be expected to be most strongly resistant to plasmolysis in hypertonic environments.
HALOPHILES are said to be extreme microorganisms that grow optimally at high salt concentrations. There are usually two ways used by halophiles to maintain proper osmotic pressure in their cytoplasm, one is accumulation of molar concentrations of potassium and chloride and adaptation of the intracellular macromolecules which is called salt in strategy or biosynthesis and/or accumulation of organic osmotic solutes which is called osmolyte strategy.Organisms living in extreme environments,like that of thermophiles, alkalophiles, acidophiles, halophiles, piezophiles and psychrophiles, have drawn much interest in the scientific community because of the molecular adaptation by which they underwent during evolution and for their biotechnological potential.
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What is the difference between sputtering and evaporation?
PVD can occur by sputtering, in which energetic ions collide with a target to expel (or sputter) target material, or by evaporation (thermal resistive and e-beam), which depends on heating a solid source material past its vaporization temperature.
Works with a wide range of materials, including those with higher melting points that can't go via thermal evaporation. Better step coverage compared to chemical vapor deposition (CVD) or sputtering. More material use efficiency. Higher deposition rates. Sputtering is a phenomena in physics whereby small particles of a solid are ejected from its surface after the solid has been attacked by intense plasma or gas particles. It happens naturally in space and may cause unwanted wear in precision components.
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Which process would be directly affected by a substance that interrupts RNA polymerases?
a. transcription
b. addition or deletion of a nucleotide
c. chromatin structure
d. translation
The process that would be directly affected by a substance that interrupts RNA polymerases is transcription, option A.
What is the role of transcription in RNA?Transcription is the process by which the genetic information encoded in DNA is used to synthesize a complementary RNA molecule. The RNA molecule carries the genetic information from DNA to the site of protein synthesis in the cell, where it is translated into a functional protein.
RNA polymerases are enzymes responsible for transcribing DNA into RNA during transcription. Therefore, an interruption in RNA polymerases would prevent or inhibit the transcription process.
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The nose serves all of the following functions EXCEPT ________.1) as a passageway for air movement
2) as the direct initiator of the cough reflex
3) warming and humidifying the air
4) cleansing the air
The nose serves all of the following functions except as the direct initiator of the cough reflex. So, the correct option is B.
Why the nose is important?The nose is important to health because it filters the air we breathe, removes dust, germs and irritants, and warms and humidifies the air to keep the lungs and tubes from drying out. The nose also contains nerve cells that help with the sense of smell.
The nose serves following functions such as a passageway for air movement, cleansing the air. etc.
Therefore, the correct option is B.
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Which beta blockers show alpha receptor-blocking activity at higher doses? A. Labetalol
B. Carvedilol C. Both are correct
.The correct answer is option C. Labetalol and Carvedilol are both beta blockers that also show alpha receptor-blocking activity at higher doses.
Labetalol is a combined beta-blocker/alpha-blocker drug, which implies that even at low dosages, it may block both beta and alpha receptors.
Carvedilol is a non-selective beta blocker, which means that at lower dosages, it solely inhibits beta receptors, but at larger concentrations, it can also inhibit alpha receptors. Both drugs are used to treat angina, congestive heart failure, and hypertension.
They function by preventing the activity of certain molecules that cause blood arteries to constrict, improving blood flow and reducing blood pressure. Also, they lower heart rate and possibly enhance general heart health.
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what is the longest muscle in the body and where is it found
Answer:
The longest muscle in your body is the sartorius,
Explanation:
a long thin muscle that runs down the length of the upper thigh, crossing the leg down to the inside of the knee.
How is combustion similar to cellular respiration?
a. It can occur only in living things.
b. It removes energy from the environment.
c. It increases the amount of carbon dioxide in the environment.
d. It needs glucose and oxygen to occur.
The correct answer is D. Combustion similar to cellular respiration as It needs glucose and oxygen to occur.
Combustion and cellular respiration both involve the oxidation of organic molecules to release energy. Combustion is a non-biological process that occurs in the presence of oxygen, while cellular respiration is a biological process that occurs within living organisms. Both processes require a fuel source, such as glucose, and oxygen to occur.
During cellular respiration, glucose is oxidized to release energy in the form of ATP, while in combustion, organic fuels are oxidized to release energy in the form of heat and light. Combustion and cellular respiration both result in the release of carbon dioxide into the environment, although combustion typically releases more carbon dioxide per unit of fuel oxidized than cellular respiration.
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What is the red bone marrow?
Blood stem cells in red bone marrow can develop into red blood cells, white blood cells, or platelets.
Yellow bone marrow is mostly fat and includes stem cells that can differentiate into cartilage, fat, or bone cells. Enlarge. The bone anatomy. Bone consists of solid bone, spongy bone, and bone marrow. Red bone marrow is responsible for the production of blood cells (hematopoiesis). Stem cells in your red bone marrow (hematopoietic stem cells) produce red, white, and platelets, which are all components of your whole blood. Human bone marrow is classified into two types: crimson bone marrow (myeloid tissue) and yellow bone marrow (fatty tissue).
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WILL GIVE BRAINLY
the unconformity shown in the diagram was created by
Answer:
Lots...
Explanation:
It's caused by
Period of erosion, pause in sediment accumulation followed by the deposition of sediments anew.
about how many months can ringworm live in the environment? A. 12 months B. 18 months C. 24 months
A ringworm is able to live inside the environment for up to approximately 18 months.
A ringworm is not a worm but an infectious fungal disease which is caused not only in human beings but also is observed in a number of animals such as cows and pets like cats, dogs etc. Ringworm is basically a very common fungal infection and includes the formation of a characteristic red ring which appear on an infected skin.
Fungal infection ends up affecting the skin which is present on the body, feet, groin, scalp, and also under the nails. The infectious stage lasts for approximately about 18 months.
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