Take in- photosynthesis
Return- respiration
Plants takes in carbon during photosynthesis while animals return carbon into the atmosphere during respiration.
A good hypothesis is an If, Than statement. I'm not sure about the scientific question. I do believe it is something that can be answerable.
Also, cellular respiration is c6h12o6 + o2 -> h2o + co2 and energy and photosynthesis is backwards of photosynthesis. It’s light energy + co2 + water to make c6h12o6 and o2. So the reactants in cellular respiration are the products in photosynthesis and the products in cellular respiration are the reactants of photosynthesis
The rungs of the double helix in DNA are made up of nitrogenous base pairs: Adenine, Thymine, Guanine, and Cytosine. The correct answer is C.
