Physical structures..........
Answer:
I believe it is D.
Explanation:
Homeostasis refers to the relatively stable state inside the body of an animal. Animal organs and organ systems constantly adjust to internal and external changes in order to maintain this steady state
A molted external skeleton.
Answer:
D: All levels contain the same amount of energy
Explanation:
This is due to how the number of animals also increase as the energy pyramid level decreases.
Hope it helps!
