It acts as a reactant in a chemical reaction.
Halo, any of a wide range of atmospheric optical phenomena
The answer is organ systems I believe
Answer:
A.
Explanation:
It is A because the diagram for choice A shows correctly how cellular respiration produces energy and releases carbon dioxide and water as byproducts(CO2). And it also shows how photosynthesis release or produces oxygen gas (O2)
The largest energy component comes from the fats in bacon and fried eggs.