Why is it important for people who study biology to understand covalent bonding?

b. the carbon cycle ensures living things have a source of hydrogen

its probably to later but whats the question

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )