What do the fossil skeletons tell us about the evolution of today's whales?

The new bones proved to have key features. Fossil whales shares new, whale-like features with the whales we know today.

Explanation:

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

not sure if this what   you'r looking for would be percent composition