Your answer is Burning of fossil fuels
so ATP is adenine triphosphate
it has 3 phosphate groups, hence the 'tri'
it has nitrogen containing carbon rings
and it also had a carbon ring containing OH groups
i can't draw it on here but if you google the structure hopefully my explanation will make more sense
Answer:
13n
Explanation:
basically goes by .2 and divide so 2.6 or 26/2=13