Cells have a selectively permeable
membrane. what is the primary purpose of this membrane?
a.)to keep all the cytoplasm inside the cell
b.)to control which materials enter and
leave the cell
c.)to allow photosynthesis
d.)to manufacture proteins

B

Explanation:

a membrane's purpose is to protect by controlling what enters or leaves the cell

B.) to control what materials enter and leave the cell

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: