I THINK its C or B i hope i helped :D
Answer: A
Explanation:
Hot springs and geysers are tell tell signs of volcanic activity beneath the earths crust, i.e, the water is heated by the magma below it.
I think the best answer would be C because in ap human geography they face resource problems.
Cells are limited in size by their surface area and volume ratio which means that when cells get so large, there is a limit that they can no longer obtain enough oxygen and nutrients. This process is involved in cell growth.
