Purines: adenine and guanine
Wow! this si a huge question but analyzing all the datils from ths option you give me I have to say that C option: <span>Heat energy became trapped in the atmosphere by greenhouse gases and was used as an energy source in the building of macromolecules, is the one that gets closer to what the scientists have said recently. Take into account for example, the examinations of Dr. Stanley Millers. I think this can help you</span>
ANSWER:
A
Explanation: chimpanzees have 0% difference from humans.
B)if it is heated and put under pressure for long periods of time
If the temperature was too hot, it would become magma instead and the cycle would start all over again.
