What best describes the role of the squirrel in the food web?

Explanation:

First, let's examine the food web and focus on the squirrel. The grass points to the squirrel which points to the hawk. There are no other arrows involving the squirrel.

Therefore, the squirrel is only food for the hawk. We can eliminate A and B.

Now, let's focus on the last two answers.  The difference between C and D is C says "primary consumer" and D says "secondary consumer". Let's define these terms.

Primary consumer

Secondary consumer

The arrow points from the grass to the squirrel. The arrow represents energy flow, so the energy flows from the grass to the squirrel (the squirrel eats grass). Grass is a plant, so a squirrel is a primary consumer.

The correct answer is C. A primary consumer that is food for a single predator, the hawk

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.