Cellular respiration is needed for atp to be made. it needs sunlight, glucose and oxygen. i’m pretty sure the main answer would just be glucose and oxygen though.
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.
The first step begins with: A. the mouth.
