Flow Of Energy And Materials

Question 1

Explain the flow of energy

Answer 1

A - heat from producer
B - heat from 1st degree consumer
C - heat from 2nd degree consumer
D - heat from 3rd degree consumer

But he circle does not close the gap from A and D because the third degree consumer is not eating the plant and eating the following animals after that.

Question 2

Explain the flow of materials

Answer 2

A to B to C to D to A

Everything it recycled in the carbon cycle. Materials are water, carbon and nitrogen.