Pyruvate and NADH act as electron carries
There are several ways by which a skeletal system <span>help aid the body when its sick. Firstly, it helps in producing red blood cells in the body. It also helps in maintaining the level of calcium in the body. It also produces the stem cells that increases the immunity of the body. I hope that the answer has come to your help.</span>
The answer is B, they were not overlapping in range, so they evolved and became not identical.
Answer:
A beacuse they can die without food
