I'm not entirely sure what you mean, but a fit animal is one that is able to out-compete with other animals in its ecosystem. It possesses some kind of advantage, which makes it easier to compete with others for food, water, shelter, and mates. Due to these qualities, the animal is obviously able to live for a good deal of time and have a greater chance of producing viable offspring.
Answer:
I think laboratory experiments
Explanation:
Answer:
Nuclear fission is the splitting of atoms while fusion is the combining
Explanation:
fission does not occur naturally while fusion occers in stars
I think option a is the correct answer