If a plant of a maple tree has more chloroplasts than the leaf of a tomato plant, then A. the maple tree will have an increase in photosynthetic potential
B. the maple tree will have an increase in respiration potential
c. the maple tree will have an increase in carbon dioxide production
D. the maple tree will have an increase in water production

I think it's A and B (viewpoint)

your answer is "the 1950's"

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.