To what does the mutual coincidence of wants refer?

an economic phenomenon where two parties each hold an item the other wants, so they exchange these items directly without any monetary medium!!

hope this helped :)

because mexico wanted to choose a centralized location

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.