The intertidal zone can be a difficult place to live. looking at your data, how did the
tide affect each species of snail?

cell regulation is conducted by special proteins.

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.

the endomembrane system i think

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .