Easy. Answer is oxygen because it says which one was missing before any life was on earth. And in order to have life on earth you need oxygen!
:)
Answer:
Your answer is a writ of certiorari.
The purpose of the ATP and NADPH produced in the light reactions of photosynthesis is to D. To transfer energy to the chemical compounds forming 3 carbon sugars.
<span>The cell has 1% concentration of the salt. The external environment is highly concentrated with 25% saline solution. This will lead to release of water outside the cell, by passive diffusion from a region of high conentration of solvent to lower concentration. Thus, the cell will shrink.</span>
