Answer:
The atmosphere
Explanation:
Most of the air travels through the atmosphere tho very little travels through the ocean from air vents, or scuba diver oxygen tanks.
I hope this helped!
yes, cell organelles can be seen with a microscope
Answer: It helps the cell absorb as many different molecules as possible.
Explanation: the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
By panting, which is in response to an external stimulus
