Large amounts of ATP are generated when the body cells function with adequate oxygen. ATP molecules are the energy currency of the cells; cells derived the energy they need for their activities from the metabolism of ATP molecules. ATP need oxygen in order to function maximally.
Compounds are made up of elements.
Elements are the ones we pull straight out from the periodic table.
For example:
H2O, HCl, NaCl, NaOH --> these are all compounds
H, N, B, Ne, Na, Cl, O, K --> these are all elements.
im not even sure tbh these are really hard im so sorry