Answer:
Chitin is a long-chain polymer derived from glucose. It strengthens cell walls of fungi and the outer covering (exoskeleton) of arthropods (including crabs, shrimps, and insects).
Explanation:
A seems most probable.
Oceans are also deeper and larger then Seas.
<u>The right answers are:</u>
HOX genes are very similar in all animals.
Many species share much the same DNA.
Plant and animal cells have almost all of the same structures.
Answer:
vestigial structure that is C
