Answer:In biology, an organ are when tissues come together that structurally form a functional unit specialized to perform a particular function. Your heart is a example of organs
Explanation:
Answer:
B. Plants in the desert would have a decreased number of stomata compared to rainforest plants.
The answer would be Parasympathetic.
The Parasympathetic is the part of the nervous system that returns his heartbeat to normal.
The type of evolutionary mechanism that occurred was natural selection