Is it first?
Explanation:
Darwin first major break through was finding natural selection by using the pea pod method and noticing how some were yellow and some were green with different textures.
You should use socratic !!
It would be D. being able to eat plants that survive in the changed environment
Hope this helps :))
I believe this is the answer you are looking for:
<span>C. The size and shape of their beaks</span>
The monomer units of the carbohydrates vary in their total numbers extensively. Moreover, positions of the carbonyl groups along with the orientation of the hydroxyl groups also vary in the carbohydrates' monomers. The presence of any modification is also variable.
On the other hand, the nucleic acids have only 4 monomeric units. The linkages between the nucleic acid residues have less geometry than the glycosidic linkages.
