You would expect an earthworm to have no exoskeleton because as you see it is very flexible and soft. Organisms with such have body parts that are divided and an earthworm do not have any visible parts on them also having an exoskeleton would not allow an organism to move like an earthworm does.
Cells can not function properly at high temperatures
I believe the answer is B
Each person pushing should feel the same force pushing back
I think it’s zero, it might be zero