Question

Which is not an example of matter and energy cycling through living things?

A. Cows eating grass
B. A rock resting on the ground
C. Grass giving off oxygen
D. Grass growing

Answer 1

Answer:

B.) A rock resting on the ground.

Explanation:

This is because no energy is being expelled by the rock, and nor is the ground it's sitting on. The rest of the examples, something is being done and taking place.

Answer 2

B. A rock resting on the ground