A. Troposphere
Is the closest around plane flying level
Answer:
The size of an amoeba cell is around 250 and 750 microns.
I've looked us up ever since you posted it the only thing I can come up with is letter A because it talks a lot about Mountain chains that talks a lot about the ocean floor and the Hawaiian stuff so try a
Answer:
Lipid molecules
Explanation:
The molecules that prevent cell membranes from dissolving are called lipid molecules most abundantly known as phospholipids.