Who describe the concept of natural selection?

Answers

Answer 1
Charles Darwin was the first to discover it
Answer 2

Answer:

Hormones

Explanation: Animal sees other mate.


Related Questions

if epigenetic changes take place above the level of the genome , what would be an example of a change at the level of the genome ?

Answers

Answer:

epigenetics chamges take place.

Epigenetics is the examination of the way cells manipulate gene interest without converting the DNA series." Epi-"approach on or above in Greek, and "epigenetic" describes elements past the genetic code.

Epigenetic changes are adjustments to DNA that modify whether or not genes are grown to become on or off. These adjustments are connected to DNA and do now no longer alternate the series of DNA constructing blocks. Within the entire set of DNA in a (genome), all the adjustments that modify the interest (expression) of the genes are referred to as the epigenome.

Because epigenetic changes assist decide whether or not genes are grown to become on or off, they affect the manufacturing of proteins in cells. This law facilitates making sure that everyone produces the handiest proteins which might be essential for its function. For example, proteins that sell bone boom aren't produced in muscle cells.

What is the epigenetic pattern?

Patterns of epigenetic change range amongst individuals, in one-of-a-kind tissues inside an individual, or even in one-of-a-kind cells inside a tissue. Environmental influences, together with a person’s food plan and publicity to pollutants, can affect the epigenome. Epigenetic adjustments may be maintained from cell to as cells divide and, in a few cases.

Hence concluded that Epigenetics changes and causes cancers, by changing the genome, epigenome, or both.

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Which part of the brain stem controls the heart rate and respiratory rate?
pons
thalamus
medulla oblongata
midbrain

Answers

Answer:Medulla

Explanation:

Answer:

Medulla Oblongata

Explanation:

The primary role of the medulla is regulating our involuntary life sustaining functions such as breathing, swallowing and heart rate. As part of the brain stem, it also helps transfer neural messages to and from the brain and spinal cord. It is located at the junction of the spinal cord and brain.

ii Why can you not produce plumcot seeds through reproduction between two plumcot plants?​

Answers

Answer:

It's a great tree for small properties because you only need one to produce fruit. Pluots are similar fruits. ... The seeds from the cross-pollinated fruit produce a different type of tree that has some characteristics of both trees.

Explanation:

sorry

A plumcot plant is produced from the cross breeding between a plum and an apricot tree. It is hybrid fruit tree.

As the plants is a hybrid fruit tree, it is not possible to produce plumcot plants through fertilization of their seeds.

A plumcot plant is derived from the reproduction between a plum and an apricot. It takes skill and planning to be able to carry out the cross pollination. Most of the time this occurs when they are found growing near each other.

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Earth follows an orbit as it makes a revolution around the Sun. What is the relationship between a revolution and an orbit?

Answers

Answer:

An orbit is essentially the motion of an object (be it a planet, a moon, a spacecraft) around a star, moon, or planet. Now a revolution is the movement of an object around an axis of rotation, or a centre, or another object. So the earth revolves around the sun, but the earth is also in orbit around the sun.

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Which events are most common along tectonic plate boundaries
A) erosion and earthquakes

B) hurricanes and tsunamis

C) earthquakes and volcanoes

D) tidal waves and volcanoes

Answers

Answer:

C. Earthquakes and volcanoes

Explanation:

finished this topic in my class.

How do free energy machines work?

Answers

The machine is plugged into an electrical source, which gets the motor's wheel spinning. The machine is then unplugged and the wheel keeps spinning under its own inertia. Then electrical energy is extracted from the spinning wheel

Explanation:

The machine is plugged into an electrical source,which gets plugged the motor's wheel spinning.The machine is then unplugged and the wheel keeps spinning under its own interia. Then electrical energy is extracted from the spinning wheel.

I hope it's helpful!

What other cell types does skeletal muscle cell
associate with? How do they interact?

Answers

Explanation:

Skeletal muscle cells

Muscle cells, commonly known as myocytes, are the cells that make up muscle tissue. There are 3 types of muscle cells in the human body; cardiac, skeletal, and smooth. Skeletal muscle cells are long, cylindrical, multi-nucleated and striated

How is food produced?

Answers

Answer:

Most food produced for the food industry comes from commodity crops using conventional agricultural practices. Agriculture is the process of producing food, feeding products, fiber, and other desired products by the cultivation of certain plants and the raising of domesticated animals. On average, 83% of the food consumed by humans is produced using terrestrial agriculture.

Explanation:

Answer:

Explanation:

Most food produced for the food industry comes from commodity crops using conventional agricultural practices. Agriculture is the process of producing food, feeding products, fiber, and other desired products by the cultivation of certain plants and the raising of domesticated animals.

A student has several pet hermit crabs. He wants to determine how the hermit crabs choose which shell they inhabit. He thinks that the crabs choose their shells based on the shells' color and wants to design an experiment to test this. Which of these steps should the student include in his experiment? A. He should add shells that are different colors, but the same size and type, to the tank and observe which shells the hermit crabs choose. B. He should observe hermit crabs in their natural environments and determine how shells help protect them from predators. C. He should place the hermit crabs in different tanks and change the temperatures in the tanks to see if it effects their shell selection. D. He should gather shells that are different sizes and different colors, place them in the tank with the hermit crabs, then observe which shells they choose. Reset Next Question

Answers

A. He should add shells that are different colors, but the same size and type, to the tank and observe which shells the hermit crabs choose.

Durning an experiment you need to keep everything the same but only change the certain things based on your theory.
Such as how the student wanted to see if the color attracted the crab. If he had changed the size and type of the shell then the crab would have chosen the bigger one as they tend to grow into larger shells.

Which type of organism gets energy from the sun?

Producers

All Types of Consumers

Herbivores

Carnivores

Omnivores

Decomposers

Answers

Actually it’s plants and producers :)

What happens during the pathway of glycolysis?

A. Glucose is broken down into private

B. Carbon dioxide is produced

C. More ATP is consumed than is produced.

D. Lactic acid is produced

Answers

Answer:

the correct answer is A :Glucose is broken down into pyruvate

Answer:

If I'm correct, the glucose is broken down into pyruvate and energy.

Explanation:

I hope this helps! ^^

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According to atomic theory, all matter is made up of particles called atoms Why is this considered to be a theory and not a law?

A. Atomic theory may change when new evidence is found that does not support the theory. A law has been proved with scientific evidence.
B. Atomic theory is a description based on observations. A law is based on mathematical calculations.
C. Atomic theory is an explanation of the nature of atoms. A law describes natural events but does not attempt to explain them.
D. Atomic theory is supported by research. A law is merely an educated guess​

Answers

B

hope thats correct, not too sure tho:(

How do human lifestyles affect sustainability?

Answers

Answer: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

In living things, cells must be in a _____________________ solution where water leaves and enters the cell at _________________________________________.

Answers

Answer:

isotonic; the same rate

Explanation:

Cell Theory as as commonly known gives the best definition for cells. All organisms that ever existed are made up of one or more cells. The theory state that the cell is a basic unit, that is of all living things, and that all cells come from cells that have existed.

For cell that is in an isotonic solution,no net flow of water into or out of the cell will be experienced, the volume of the cell is at a state of stability. When the level or concentration of solute in and out of the cell is at the same pace or level, the the cell membrane does not allow solutes to cross, leading to the solution being isotonic to the cell.

Biology - need ASAP. will mark brainliest

Describe the main ways in which the blood helps you to avoid infection. Include a description of the parts of the blood involved.
(6 marks)​

Answers

Answer:

Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.

Explanation:

It can be Blood O or Blood AB cause Blood O is rare at if the male have Blood O it can replace blood easily for female
As for Blood AB it’s rare cause Blood O can be put in blood AB if you be careful enough maybe
I hope it help

Which of the following answers is NOT correct with regard to convection currents?

A. Convection currents in magma drive plate tectonics.

B.Convection currents in magma are a result of density differences.

C. Convection currents play a role in the movement of Earth’s inner core.

D. Convection currents in magma are caused by temperature differences.

Answers

Answer: C....Convection currents play a role in the movement of Earth’s inner core

The statement which is not correct with regard to convection currents is as follows:

Convection currents play a role in the movement of Earth’s inner core.

Thus, the correct option for this question is C.

What is Convection current?

Convection current may be defined as a procedure that significantly involves the movement of energy from one place to another. It is basically the existence of current in a fluid through convection.

The inner core of the earth has appeared as solid as compared to other parts like the crust and mantle. Most liquid particles are definitely found on the mantle of the earth's surface.

Due to the presence of excessive liquid particles and compounds, the convection current is significantly noticed there.

Apart from this, magma is also a fluid that derives current through convection. It produces in a number of ways like magma driving plate tectonics, density differences in the magma, and temperature differences.

Convection currents are basically the movement of fluid with respect to temperature or density difference within the material.

Therefore, the correct option for this question is C.

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Explain why is important to know some biology in the middle of a pandemic

Answers

Knowing biology during the pandemic will help people know/ understand the facts better. Without the knowledge of how the body/ respiratory system works it is very difficult to understand the science and facts of the pandemic

Please help me I beg you please help

Answers

Answer:

A-T

T-A

T-A

C-G

A-T

G-C

G-C

C-G

T-A

A-T

Answer:

ATTCAGGCTA= TAAGTCCGAT

Explanation:

adenine pairs with thymine with 2 hydrogen bond in DNA and cytosine pairs with Guanine with 3 hydrogen bonds .

please HELP MEEEEEEEEEEEEEEEEEEEEEE

Answers

Answer:

Yes tell the question brooooooooooooooooooooo

Explanation:

where 's your question ??:))

what is pseudopodia?​

Answers

Answer:

Pseudopodia are temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move.

Explanation:

Pseudopodia are temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called amoeboids. The amoeba is a common example. ... Pseudopods can also capture prey by phagocytosis.

an example of prokaryotic cell is a ___ cell

Answers

Answer:

A bacterium

Explanation:

Prokaryotic cells lack a nuclear envelope, so what would be their nucleus is just kind of floating around inside of them.

What is an extreme disturbance to any ecosystem? (1 point)

Elk overgrazing
Hurricanes
Coral bleaching
Extreme temperature change

When an ecosystem is disturbed by fire or toxic chemicals, it affects (1 point)

One type of habitat in the ecosystem

One type of food source in the ecosystem

Living things in that ecosystem

Only a particular species in that ecosystem

If deer are not hunted every season, a potential result is (1 point)

The predator population will decrease

The deer population will decrease

The plant population will increase will increase

The smaller herbivore population will decrease

An example of a severe disruption to an ecosystem is (1 point)

A seasonal flooding of a river

A thunderstorm that knocks down some trees

Repurposing a building in a downtown area

The loss of a river system due to contamination

If an ecosystem irreversibility destroyed, species unable to travel or adapt will (1 point)

Find a new food source

Die out in the area

Find additional mates

Grow in population

Answers

Answer:

1.) extreme temperature change

2.) living things in that ecosystem.

3.)the smaller herbivore population will decrease.

4.) the loss of a river system due to contamination.

5.) die out in the area.

Explanation:

Just took the QC

What can be considered as an extreme disturbance to any ecosystem is :extreme temperature change.

Whenever, there is a disturbance in terms of fire or toxic chemicals to ecosystem, then : living things in that ecosystem.

In a case, whereby no one hunt deer, then there would be decrease in smaller herbivore population.

loss of a river system due to contamination can be considered as a of a severe disruption to an ecosystem.

When there is  irreversibility destroying of ecosystem, then :species unable to travel or adapt will die out in the area.

An ecosystem  can be regarded as geographic area which encompass plants, animals as well as weather relate together.

One of disturbance that occurs in an ecosystem is extreme temperature.

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Despite his fear of germs, Howard Hughes neglected his own hygiene despite having those around him follow strict cleanliness practices. Hughes had these odd behaviors because __________.
A.
he believed he was unable to escape any infection
B.
he developed obsessive-compulsive disorder at an old age
C.
he thought he would be contaminated from the outside
D.
his paralysis at a young age prevented him from being self-sufficient

Answers

Answer: it’s c he thought he would be contaminated from the outside

Explanation:

I took the test

Howard Hughes neglected his own hygiene despite having those around him follow strict cleanliness practices. Hughes had these odd behaviors because he thought he would be contaminated from the outside.

What is importance of cleanliness?

Cleanliness gives rise to a good character by keeping body, mind, and soul clean and peaceful. The cleanliness only which helps to improve our personality by keeping clean externally and internally.

Thus, option "C" is correct.

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Explain how a semi-permeable membrane works.

Answers

Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion—or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport.

What is a complex Sugar? Please a specific answer(make more sense)

Answers

Answer:

Complex carbohydrates are MADE up of sugar molecules that are strung together in long complex chains, complex carbohydrates are found in food like peas, beans, whole grains and vegetables.

Explanation:

Both SIMPLE and COMPLEX carbohydrates are turned into glucose (blood sugar) in the body and are used as energy.

I really hoped this helped some, I tried to make it specific :[

how to control diarrhoea​

Answers

Answer:

Diarrhea should go away in a few days without treatment. until you feel better, rest, drink enough fluids, and watch what you eat.

What did u eat that made u have it?

Which small-scale mutation would be most likely to have the least negative effect on the function of a protein?
A substitution of one base for another within the sequence
A base deletion near the start of a gene
A base deletion near the end of the coding sequence, but not in the terminator codon
A deletion of three bases near the start of the coding sequence, but not in the initiator codon

Answers

Answer:

substitution

Explanation:

has a chance to cause silent mutation, which doesnt do anything to a protein.

The small-scale mutation that would most likely have the least negative effect on the function of a protein is ; ( A ) A substitution of one base for another within the sequence.

A substitution of one base for another within the sequence of a protein will cause an insignificant/silent mutation within the protein sequence and this mutation will not be evident in the protein.

When a base is deleted either near the start of a gene or near the end of the coding sequence, it will have a significant effect because this will change the sequence of the DNA ( due to the deletion of at least one nucleotide ).

Hence we can conclude that the small-scale mutation that would most likely have the least negative effect on the function of a protein is ; A substitution of one base for another within the sequence.

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In a sex linked trait, the recessive phenotype is most often found in males because...

Answers

Answer:

X-linked recessive diseases most often occur in males. Males have only one X chromosome. A single recessive gene on that X chromosome will cause the disease. The Y chromosome is the other half of the XY gene pair in the male.

Explanation:

Why are you learning this stuff anyways.Girl????????

Which of the following statements is correct about air temperature?

When air temperature is higher, the weather is warmer.
Warm air falls to the ground.
Freezing air temperatures increase the chances of rain.
When air temperature is higher, the weather is colder.

Answers

Answer:

Answer is freezing air temperatures increases the chances of rain

Explanation:

Answer:

When air temperature is higher, the weather is warmer

What is tendonitis?////////////////////////////////////////////////////////

Answers

A condition in which the issue connecting muscle to bone becomes inflamed.
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the vascular tunic of the eye (the uvea) has three distinct regions. from anterior to posterior what are they? A right triangle has side lengths 45 millimeters, 108 millimeters, and 117 millimeters. What is the length of the hypotenuse and why?117 millimeters, because it is listed last.117 millimeters, because the hypotenuse is the longest side.45 millimeters, because 45 is half of 90 and a right angle is 90.45 millimeters, because the hypotenuse is the shortest side.Submit Which AED has nonlinear pharmacokinetics, may interfere with drugs metabolized by CYP2C9/19, and may produce gingival hyperplasia, facial coarsening as side effectsPhenytoin Blue light (500 nm) and yellow light (600nm) are incident on a 12-cm thick slab of glass as shown in the figure. In the glass, the index of refraction for the blue light is 1.545, and for the yellow light is 1.523. What distance along the glass slab (side AB) separates the points at which the two rays emerge back into air? A company sells square carpets for $5 per square foot. It has a simplified manufacturing process for which all the carpets each week must be the same size, and the length must be a multiple of a half foot. It has found that it can sell 200 carpets in a week when the carpets are 3ft by 3ft, the minimum size. Beyond this, for each additional foot of length and width, the number sold goes down by 4. What size carpets should the company sell to maximize its revenue? What is the maximum weekly revenue? list all the positive divisors of each number. (a) 24 (b) -36 (c) 35 (d) -32 how many cost functions in the sr, and how many cost functions in the lr? why do they differ? (04.06 MC)Escucha, lee la pregunta y escoge la opcin que contesta la pregunta. Listen, read the question, and choose the option that answers the question.Which art career is being described in the audio? 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The rate of oxidation and reduction of coenzyme U in mitochondria is the same as the overall rate of electron transport: e.AIl other known coenzymes are part of the electron transport chain; so coenzyme U must be; too. In chemical reactions, atoms are Write the net cell equation for this electrochemical cell. Phases are optional. Do not include the concentrations. Sn(s)Sn2+(aq, 0.0155 M)Ag+(aq, 2.50 M)Ag(s) net cell equation: Calculate cell , rxn , rxn , and cell at 25.0 C , using standard potentials as needed. (in KJ/mole for delta G)cell= ?rxn= ?rxn=?cell= V