Explain why it is important to study ocean microbes with regard to the biosphere.

this is a good question! i'll do some research and come back when i have the answer!

thinking it would be d not too sure but i think it's right

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.