Some living thing's bodies are weaker than others. For the species to live, the strong ones of the species will not get sick, reproduce and create strong offspring. The weak will die out.
Answer:
Yes it does, it doesn't hurt the mice a bit
Explanation:
Stem cells. Or more specifically, embryonic stem cells.
Answer:
Carbohydrates give you energy for instance marathon runners will eat a lot of carbs like pasta and bread to give them energy
Explanation:
