Which statements best describe natural selection? check all that apply. populations must have genetic variation. genetic mutations do not produce advantageous traits. natural selection occurs when the environment changes. evolution works independently of natural selection. organisms best suited for the environment survive and reproduce

The answers are A, C, E.

Explanation:

My only explanation is I did the question wrong and got the answers...

A) Populations must have genetic variation.

C) Natural selection occurs when the environment changes.  

E) Organisms best suited for the environment survive and reproduce.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger