The similarities in the fore limb bones of humans,cats,dolphins and bats leads to the conclusion that they all evolved from a common ancestor.
Answer:
C. A protein
Explanation:
The outcome of protein synthesis is <u>a protein.</u>
X: Ozone layer destruction
Y: Mass extinction
Body composition:<span>is the percentage of person's total body weight that is made up of adipose (fat) tissue as opposed to lean body tissue is known as their body composition. Disease risk is closely related to body composition.
</span>