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DanielleElmas [232]
3 years ago
7

What is natural selection?

Biology
1 answer:
ivanzaharov [21]3 years ago
4 0

Answer:

the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.

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The parasympathetic division of the autonomic nervous system A. is associated with "fight or flight." B. opposes the effects of
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I think the answer is B> opposes the effects of the sympathetic division

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3 years ago
In your own words, what is biodiversity?
grin007 [14]

Answer:

Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.

Explanation:

♡ I hope it's help u ♡

5 0
3 years ago
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5 mins!!!! Fossils help plz.​
lesantik [10]

Answer:

Layer D

Explanation:

Layer D would be the oldest form of undisturbed rock. This would mean that since it is the oldest, it will be <em>least</em> similar to the present day form of that organism.

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3 years ago
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Which of the following provide chemical evidence of ice ages? A. variations in pH levels in fossils B. concentrations of compoun
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I believe the answer is B, although A has as well a very good chance of being correct. But B does support evidence with the chemicals found inside them.

8 0
3 years ago
An isotope has an atomic number of 8 and an atomic mass number of 18. How many neutrons does it have?
Paul [167]
The atomic number of an isotope is the number of protons it contains, whereas the mass number is the total mass of the nucleus, which is the combined number of protons and neutrons in the nucleus. To find the number of neutrons, you must therefore subtract the atomic number of the isotope from the mass number of the isotope. 
<span>In the above example, the atomic number is 8 and the mass number is 18. This isotope is known as O18. The number of neutrons in the isotope is: Mass number - Atomic number = Number of neutrons




</span>
4 0
4 years ago
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