In an area with very tall trees shading an understory of shorter trees, all of which have epiphytes growing on them which of the following other conditions are most likely to exist as well

I believe it is that the night temps are colder and the one that says the soil has a thick layer of organic material.

Explanation:

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.