Practice!

Sample Problem

Which of the following best describes the main purpose of the food web? It is used to show

Solution

(B) is the correct answer. (A), (C), and (D) are all equally as tempting because the food web does show these things, but the food web is mainly used to show the energy flow in the ecosystem. Remember choose the best answer. This question is a hard one and very subtle! It’s ok if you tripped up on it.