I believe that it's an exhausted bear. Cellular respiration is the way plants and animals receive energy. If the bear is exhausted, it means it's cellular respiration is lacking.
Answer:
D. a continuous rise and fall of water in season oceans
The answer is Cell Membranes.
Answer:
Adaptation is process which runs parallel to an evolution
1. Is A
2 Is B
Because A and T in the DNA sequence goes together so they both have to have the same amount same goes for C and G