A student wants to add an arrow between the reactions shown to model how the two systems work together to cycle carbon among Earth's systems. Which change could be made to the model to
BEST represent the flow of carbon between photosynthesis and cellular respiration?
A
Add an arrow pointing from the product side of the photosynthesis reaction to
the reactant side of cellular respiration.
B
Add an arrow pointing from the reactant side of the photosynthesis reaction to
the reactant side of cellular respiration.
с
Add an arrow pointing from the product side of the photosynthesis reaction to
the product side of cellular respiration.
D
Add an arrow pointing from the reactant side of the photosynthesis reaction to
the product side of cellular respiration.