If O2 is an input for Respiration, what needs to be added to make O2 ->H20?

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

Why has two different alleles for the same trait?