List the similarities that tetrapod limbs share:

The four limbs you picked out all belong to tetrapods — animals with four legs. Notice how these tetrapod limbs are similar to one another: They are all built from many individual bones. They are all spin-offs of the same basic bone layout: one long bone attached to two other long bones.

Explanation:

c is the answer to this question. altitude affects the weather because air molecules evaporate.