What would be the outcome if there were no pioneer species in an area with bare rocks?

i'll try what topic lol

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

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.