In the respiration-photosynthesis cycle shown above, what are the reactants of cellular respiration that belong in box 1?
a.
glucose and oxygen
b.
atp and methane
c.
protein and nucleic acids
d.
carbon dioxide and water

sugar and oxygen. organic compounds (e.g. sugars) and oxygen are both produced in autotrophs. autotrophic products are used by heterotrophs to carry out cell respiration.

no i don't feel that humans have oversubscribed some medications

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.