(a) What is the reason for different types of silk? (b) Why are eggs laid by female silk moths warmed?
(c) After how many days, caterpillars stop eating and start to spin cocoons?
(To be noted- a b and c are question not option it is subjective question)

The answer is option a.

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.

It was said to have happened by earthquakes, the shifts in the tectonic plates moved everything