Answer:
D
Explanation:
All other answers are not true.
Proteins are made up of a series of amino acids. Nucleic Acids (RNA and DNA) are made up of a series of nucleotides.
you really did not know this???
Carbon dioxide is used to build sugars. I think it's the only one
The answer to the problem is c
The long-necked giraffes can access more food, so they have a better chance of surviving to reproductive age.