How do trees interact with other organisms?
a.
they provide other organisms with food.
b.
they receive shelter from other organisms.
c.
they obtain food from other organisms.
d.
all of the above

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.