Ari drew a diagram to show organisms in an ecosystem. A flowchart. Cycle 1: 1, Grass. 2, Grasshopper. 3, Shrew or Mouse. 4, Fox. Cycle 2: 1, Grass. 2, Mouse. 3, Fox or Snake. Cycle 3: 1, Grass. 2, Rabbit. 3, Fox.

What did Ari draw?

a food chain
a trophic chain
a food web
an energy web

Ari draw a food web.

Explanation:

A single ecosystem which contains all the food chains is called a food web.

In a food web each living thing present in a food web is a part of multiple food chains. Hence, food webs tend to represent the overlapping of food chains in that ecosystem.

The flow chart drawn by Ari represents that the living things present in cycle 1 are part of cycle 2 and cycle 3. Also, living things present in cycle 2 are part of cycle 1 and cycle 3.

A food chain is basically a single path where each organism is dependent of the other as a source of food without any overlapping.

Thus, we can conclude that Ari draw a food web.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."