ATP adenosine triphosphate is the energy molicule that makes the muscle contract when it is present.
When the fossil fuels are burned they produce energy and give of harmful gas
Bottleneck is the term used to define chance changes in the frequency of alleles which have a significant effect on small populations. The effect is that the population is greatly reduced because of the change in the allele frequency. A genetic drift will follow which will expedite evolution.
I would imagine it is the pituitary gland
