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.
Scientists use fossils to study earth history by identifying the fossil and what era it came from. By knowing what era the fossil came from and what location it was found, scientists can make assumptions about the earth formation at that time.
Answer:
A mass of nutrients enters a stomach full of strong, hydrochloric acid. The acid gets rid of all of the waste material, which is then expelled.
Explanation: