Question

A red squirrel has 4000kJ of energy from organisms in the following food web.Which of the following statements best describes the transfer of energy between the red squirrel and the fox?

Answer 1

Let's define how energy moves in a food web:

The primary producers will produce the most energy. From each successive level, it will be 10% of the energy transferred.

Let's apply this to the context of the problem:

We are given that a red squirrel has 4000 kJ of energy. We know that a red squirrel is a primary consumer and has a predator. That predator, in the secondary consumer level, is the fox. Since the fox is 1 level above the red squirrel, we can simply take 10% of the squirrel's energy:

4000 kJ(0.10) = 400 kJ

Therefore, our answer choice is the 1st answer choice.