Answer:
Carbon, Hydrogen and Oxygen :)
Oxygenic photosynthesis works as a counterbalance to breathing by taking in the carbon dioxide produced by all breathing organisms and reintroducing oxygen to the atmosphere.
Hypothesis must be tested as the focus if any experiment
<span>Plants take nitrogen from the soil by absorbing through there roots as amino acids Most nitrogen obtained trerrestrial animals can be traced back to the eatinf of plants at some stage of the food chain. hope this helps!</span>