How can students in the photograph use the net to sample the invertebrates in the river.
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Answer and Explanation:
Macroinvertebrate communities show spatial and temporal variability. Many taxons have more affinity for one specific type of habitat.
There are two principal sampling techniques. Qualitative and cuantitave. Qualitative techniques provide data about the river richness and the relationship between the different taxonomic group's abundance. They allow the obtention of the most representative and abundant taxons, estimates their densities, biomass, and calculates the diversity indexes for each sampling site by period. Nets are needed to sample.
Every possible microhabitat must be sampled. The use of the different sampling elements depends on the substrate.
Hard-substrated sites, such as rocks or wood and organic matter, are sampled using a Surber net. The net is placed counter-current. The substrate must be moved and removed up to 10-15 cm deep, checking that animals and the thin sediment lie on the net. Samplings must be done from downstream to the upstream direction, taking replicates per substrate. Invertebrates must be washed on a strainer. Finally, place each of the samples in a plastic bottle, fixate the material with formaldehyde 4% and take it to the lab for its taxonomic identification.Related Questions
please be my bsf and help me answer this
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Answer:
photosystems :)
Explanation:
Answer:
b
Explanation:
How have plants adapted to different environmental conditions?
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Answer:
Plants adapt to their environment from necessity. Plants may also adapt by growing lower and closer to the ground to shield themselves from wind and cold. Desert environments may have some of the following adaptations, these help the plant to conserve food, energy and water and still be able to reproduce effectively.
Explanation:
2. Which of the following BEST describes an organic compound?
a compound containing carbon that is important to the survival of living systems
a compound often found inside cells that is destructive to living systems
a compound containing oxygen that is important to the growth of living systems
a compound that attaches to the outside of cells and destroys living systems
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Answer:
a compound containing oxygen that is important to the of living system
Question: Explain how DNA is replicated using the following terms: nucleotide, enzyme, and complementary bases.
No rush but the sooner the better.
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Answer:
DNA replication occurs through the help of several enzymes. These enzymes molecules by breaking the hydrogen bonds that hold the two strands together
Explanation:
What are the qualities of greenhouse gas? Select the two correct answers.
A. transparent to infrared radiation
B. three or more atoms in a molecule
C. produced by human activity
D. absorbs and re-emits infrared radiation
E. composed of single atoms, not molecules
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I agree with the user's answer above ^. I think both choices suit the qualities of a greenhouse gases. So, yes 'absorbs and re-emits infrared radiation' and 'transparent to infrared radiation' are correct.
Infrared radiation is emitted by greenhouse gases. Therefore, option"A" is correct.
What are greenhouse gases?A gas that can absorb infrared light is referred to as a greenhouse gas. Only molecules with three or more atoms have the capacity to absorb infrared light. Homonuclear diatomic molecules like N2 and O2 don't absorb or emit infrared light because their dipole moments don't alter much.
The quantities of greenhouse gases are influenced by numerous factors. Fossil fuels release CO2 . Since the Industrial Revolution, human activities, particularly the burning of fossil fuels, have led to persistent increases in the atmospheric concentrations of different greenhouse gases, including carbon dioxide, methane, ozone, and chlorofluorocarbons (CFCs).
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What kingdom does the snake belong to?
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Answer:
The snake belong in Animal
Explanation:
Why is DNA related to protein
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DNA stores the instructions (genetic information) used to build proteins.
Groundhogs sometimes eat garden vegetables such as these peppers. Once the pepper has been eaten and digested, the seeds exit the animal through its waste. In what way does this help the pepper plants?
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would like help . . . . . .. .
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Answer:
D.Children of congressional leaders.
Explanation:
The leader of the party that owns a majority of seats in either house of Congress or of a state legislature. Elected by their own party councils, majority leaders act as chief spokespersons and tacticians for their parties. The principal functions of a majority leader normally associate to floor duties. The majority leader is the lead speaker for the majority party during floor discussions, exhibits the calendar and supports the president or speaker with program advancement, policy formation, and policy decisions.
Hope this helped you :D
Anybody please helppppppp!!!
It’s a gizmos science assignment due tmrw!!
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8 Cloning is one type of biotechnology. Which of these choices is an example of
cloning?
A Certain chickens are bred for their distinctive feather color.
B Several copies of a fruit fly gene are produced in a laboratory.
C Plants with red flowers are bred with plants with blue flowers.
D Yeast cells are placed under an ultraviolet lamp, causing their DNA to mutate.
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Answer:
B) Several copies of a fruit fly gene are produced in a laboratory
What is the Plantae Fact
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Answer:
The Plantae includes all land plants: mosses, ferns, conifers, flowering plants, and so on—an amazing range of diverse forms. With more than 250,000 species, they are second in size only to the arthropoda. ... Another important contribution of plants is their shaping of the environment. Think of a place without plants.
Hope Helps you!!
Answer: The Plantae includes all land plants: mosses, ferns, conifers, flowering plants, and so on—an amazing range of diverse forms. With more than 250,000 species, they are second in size only to the arthropoda.The kingdom Plantae includes all land plants, mosses, flowering plants, ferns and so on. With an excess of 250,000 plant species, the kingdom Plantae is the second largest family of organisms. Only the Arthropoda family is larger. The most striking characteristic associated with plants is their green color.
I hope this help you<3
Which would best explain why the production of transgenic plants may be harmful?
A. They are used in the production of rare medicines
B. They contain vital nutrients
C. They reproduce rapidly
D. They produce natural insecticides which could kill beneficial insects
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Answer:
The answer would be the last one
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Rinoy wants to electroplate copper on an iron nail.
0 What should he use as the positive electrode and negative
electrode for this process?
(0) Which electrolyte should he use for the process?
(ii) Which of the two electrodes will gradually wear away
during electrolysis-anode or cathode?
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Answer:
See explanation
Explanation:
Electroplating involves the coating of one metal on another metal. It is an electrochemical process. The positive electrode is the coating metal while the negative electrode is the metal on which the coating is to be performed.
Since copper is to be coated on an iron nail. A copper plate is made the positive electrode while the iron nail should be the negative electrode.
The electrolyte used in the process should be a copper salt e.g CuSO4 solution.
As electrolysis progresses, the copper electrode(positive electrode or anode) gradually wears away due to the fact that the copper ions are going into the solution and are being deposited on the iron nail.
True or false. Differences in the amount of silica and silacon dioxide affect magma's thickness and viscosity.
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Give THREE examples of an adaptation of an organism and WHY it is considered an adaptation.
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Answer:
There are three different types of adaptations: Behavioural - responses made by an organism that help it to survive/reproduce. Physiological - a body process that helps an organism to survive/reproduce. Structural - a feature of an organism's body that helps it to survive/reproduce.
Explanation:
Which term means a group of organiss that have similar traits and are able to produce fertile offspring?
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Answer: species
Explanation:
What are proteins made of, and how many options are there for these building blocks?
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Answer:
Amino Acids
Explanation:
They are building blocks for proteins.
Is methemoglobinemia recessive or dominate? Provide examples to back up your answer
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Answer:
recessive
Explanation:
The inheritance pattern of the congenital enzyme deficiency form of the disease is autosomal recessive. Hb M is inherited in an autosomal dominant pattern. There is no association between sex and the frequency of congenital methemoglobinemia.
Methemoglobinemia is an autosomal recessive congenital disorder. It means that both copies of the gene are found to be recessive in order to express a phenotype.
What do you mean by the Dominant trait?The Dominant trait may be defined as a form of trait which governs by the presence of at least one dominant copy of that gene.
Methemoglobinemia may be defined as a blood disorder in which very little amount of oxygen is delivered to your cells. Cells may feel the scarcity of oxygen.
If an individual is affected by this disorder, both the copies of its gene are found in a recessive form in order to mask the effect of a dominant copy.
Therefore, it is well described above.
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i would really appreciate it if someone can helpp!!!
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Answer: IM NOT SHORE but when you have to BB its 100% black and the parent of that one will pass on B always. the white mouse is bb this is a resistive trait.
Explanation:i hope i help you sorry if it didnt but i tired my best
How dose human activity effect the water cycle
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can someone put these in the right order ? IM GIVING BRAINLIEST ANSWER FOR THIS PLEASE! i inserted a picture ) thanks so much I need this fast as possible
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Answer:
chlorine (17)
nitrogen (2,5)
magnesium (12)
lithium (2,1)
Explanation:
1. chlorine
2. magnesium
3. nitrogen
4. lithium
Question 16
How does the skeletal system interact with the nervous system?
A the nervous system supplies the blood and oxygen to developing bones
B
the nervous system supplies nutrients and minerals to developing bones
С
the skeletal system controls the messages sent to the brain and spinal cord
D
the skeletal system provides protection for the brain and spinal cord
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Answer:
D
the skeletal system provides protection for the brain and spinal cord
Help me please. its with biology i need an answer and why its that answer
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Answer:
It's C. Plants produce oxygen and nutrients via a process known as photosynthesis using water and carbon dioxide
Are bacteria and viruses bound by a cell membrane or is it exclusive to one of them? Do bacteria and viruses have a nucleus or do only one of them have one?
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Answer:
Explanation:Lack membrane-bound organelles - While bacteria have a few organelles involves in metabolism and reproduction, they, like viruses, do not have membrane-bound organelles. In viruses, the nucleic acid is not contained in a nucleus as is the case with eukaryotic cells.
Word bank
• sexual reproduction
• diploid
• unique daughter cells
• gametes
• meiosis
• unique
• haploid
• zygote
• identical daughter cells
• mitosis
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Answer:
Meiosis is a process in which sex cells, also known as gametes are made. Meiosis is different from mitosis in a lot of ways, one being that mitosis creates identical daughter cells and meiosis creates unique daughter cells. Meiosis is important because it allow for the creation of a meiosis nucleus. Cells produced by meiosis will be used in haploid, where each member of the next generation is genetically unique.
Cells produced in sexual reproduction will have half of the genetic information of body cells and will be genetically unique. This is necessary because when a sperm and an egg fuse together in sexual reproduction. They form a zygote: the first body of a new individual.
The new individual will now have cells that are diploid, meaning they have two sets of chromosomes. They zygote will have to do a lot of mitosis allowing it to grow quickly and ensure that all of its cells are genetically unique.
How can we use soil to fight climate change
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Answer:
Global soil resources contain more organic carbon than the world's atmosphere and all of its plants combined.
Explanation:
Hope this helps sorry if incorrect
A healthy lifestyle is important because
A) people cannot control their genetic traits
B) lifestyle choices are the most important factor in disease prevention
C) unhealthy lifestyles lead directly to toxic environments
D) all of the above
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Answer:
C
Explanation:
If your not carefull who you're around you can get hurt or i dont known how to explain it
Answer:
A
Explanation:
can I please get help with it
Answers
you search it
or ask your parent
Scientists often use the analogy of a tree to describe the history of life on Earth. All organisms alive today, including archaea, bacteria, and eukaryotes, can trace their development to the same common ancestor or set of ancestors, which forms the base of the tree. Which statement provides the strongest evidence for the conclusion that all living things share common ancestry?
a. All living things perform either cellular respiration or photosynthesis
b. All living things use DNA as a genetic code to transmit information
c. All living things have vestigial structures that are remnants of structures found in ancestral species.
d. All living things are made of cells with approximately the same composition, size, shape, and function
Answers
Answer:
B
Explanation:
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to discover history of a living organism and to produce proteins, which are the complex molecules that do most of the work in our bodies