Answer:
A) Starving and doing what it can to get energy
Explanation:
The body uses carbohydrates and fat as main energy source. Aminoacids are used as energy source on a high protein diet as its exceds the amount needed for protein synthesis, or on starvation. In this second case, the aminoacids comes from the degradation of muscle proteins.
Heat is one of the processes in which energy is lost.
Metabolic Activity is also a reason why energy is lost through each trophic level.
I hope that this helped you out hun :)
Specialised cells , nerve cells , blood cells
