The tern you are looking for is called consumers. Hope you have a great day!
Atoms can form molecules by donating, accepting, or sharing electrons to fill their outer shells.
Where heavy metals pesticdes move up the food chain and start to kill lower leveled species/ animals.
A, D, and not sure but maybe E
Food web is more appropriate because of how wide spread the animal kingdom is, there are many predators for many different animals. For example, if a rabbit is killed by a wolf and the wolf eats a part of the carcass and leaves it, soon other scavengers will come and eat the remains, which then spans out into a web of animals, which allows us more data than what a chain may give us to visualize.
