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

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.

straight or amphibians are homeothermic to thermal

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.