Answer:
There was probably some sort of bring-over from a different area where the new squirrels lived before. Maybe the squirrels had to migrate. There are a lot of possibilities, but most likely some sort of reproduction adaptation.
Answer:
immune and digestive system
Explanation:
I believe it is A. because hypothesis is an eduated guess, usually with limited evidence.<span />
The structural organization of autonomic nervous system or ANS is different from somatic nervous system or SNS.
In the ANS, the motor neurons of the central nervous system do not directly control visceral effectors. They synapse with visceral motor neurons or preganglionic neurons in ganglia, and the ganglionic neurons control the visceral effectors.