If you’re going hiking this weekend and you have the option of hiking a mountain (A) that is 1400 meters in height and a mountain (B) that is 650 meters in height, BUT you know that you have limited time because of other plans – which mountain would you choose to hike? Why?

It is evolution, because we all have some of the same traits like eye color or shape or ears.

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.