11. which of the following is true about chemical energy?

a. chemical energy can only be stored as adp.
b. chemical energy is released when bonds in adp are broken to form atp.
c. chemical energy can be stored more efficiently as glucose than it can be as atp.
d. chemical energy is stored when bonds in atp are broken to form adp.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

radon is correct hope this