The main result of photosynthesis is
a)
global warming
b)
food production.
carbon dioxide production.
d)
decreased atmospheric oxygen.

blue

light-years

magnitude

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.