Which process drives Darwin’s theory of evolution?

Answers

Answer 1

Answer:

The answer is natural selection.

Natural selection is the differences in survival and reproduction as the consequence of differences in phenotypes. According to Darwin's theory of evolution, natural selection is the only factor that affects a frequency of different variations and it is the only mechanism of evolution. In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. Darwin's theory suggested that there are variations among individuals in a population and that these variations will help individuals to survive.

Answer 2

Answer:

The answer to the question is in fact Natural Selection

good luck and have a great day!

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Which of the following best describes half-life?a. Half the time it takes for all of the nuclei in a sample of a radioactive isotope to decay.
b. The time it takes for the nucleus of one atom of a radioactive isotope to split in half.
c. The time it takes for half of the nuclei in a sample of a radioactive isotope to decay.
d. The time it takes for the nucleus of one atom of a radioactive isotope to decay.

Answers

The time it takes for the nucleus of one atom of a radioactive isotope to split in half is half life.

The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive.

What is radioactive isotope?

An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable.
Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment.
These are also called radionuclide.

To know more about radioactive isotope here

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I think b, because it’s the time that the isotope takes to fall to half of its original value

One adaptation that is unique to marine mammals is they___ a. can slow their heart beat down. b are warm-blooded.. . c. breathe air through their lungs.. . d. nurse their young.

Answers

One adaptation that is unique to marine mammals is they nurse their young.. The correct option among all the options that are given in the question is the fourth option or the last option or option "d". I hope that this is the answer that you were looking for and the answer has come to your desired help.

The responding variable is what you are ________ based on the changes of the manipulated variable.

Answers

Answer:

The dependent (or responding) variable is the one that is observed and likely changes in response to the independent variable.

Explanation:

One advantage of meiosis isit creates genetic variety in cells
it creates consistency in cells
it creates cells that are similar
it creates cells that are copies

Answers

it creates cells that are copies

Answer:

D) It creates cells that are copied

Explanation:

I just did it on a test.

{Hope this helps} : )

Mammals that give birth to under-developed young that must continue developing in a pouch-like structure are termeda. monotremes.
b. marsupials.
c. placentals.
d. bird-like.

Answers

The answer is b. marsupials.

Monotremes, marsupials, and placentals are groups of mammals that mainly differ in modes of reproduction.
Marsupials are the group of mammals that give birth to under-developed young. The young continue their development inside a pouch-like structure. The most famous marsupials are kangaroos, koalas, opossums, numbats, etc.

Monotremes are the group of mammals that lay eggs, so they do not give birth to live young.
Placentals are mammals that give birth to fully developed young. The young develop inside a mother's uterus.

When measuring the length of an earthworm,which graduation would allow for the most accurate measurement?

Answers

Answer:

A Ruler scale

Explanation:

Graduation refers to the tool that measures the length of any particular object. It contains a mark that points to the exact value on a visible scale. These are the linear scales frequently used and they are both straight as well as curved. The units are usually in inches, millimeters, and centimeters.

The ruler scale is often used to measure the length of an earthworm because it gives the most accurate measurement.

I would chose centimeter because it is the smallest and most precise of the measurements! :)

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