When the environment changes, differences between individuals allow some plants and animals to survive while others die or move to new locations. which of these statements best describes how this happens?
a. environmental changes casue variations in animals that lead to adaptations.
b. all animals are able to survive when the environment changes, which leads to their variations, and adaptationsc) animals have variations, and when the environment changes, these variations allow populations to adapt and survive.
d. animals have different adaptations that allow them to survive when the environment changes, which leads to variation.

What is the point of this?

Not sure what you mean by this question

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.