Answer:
The answer to your question is: The second option is correct.
Explanation:
Pospholipid bilayer is a thin lipid layer that protects and isolate the cell from the enviroment, also it controls the the entrance of molecules to the cell and ejects wastes. So it is extremely important.
it is not important This could not be the right answer, bilater is very important.
to maintain a proper internal environment I think this is the right answer because among others, membranes mantain a proper internal environment.
to link cells together This option is incorrect, because membranes do not link cells.
things that we do daily such as driving for example, has an effect on our ecosystem. Driving pollutes the air in our ecosystem and uses up gas and diesel resources.
Answer is Biogeochemical cycles.
In an ecosystem biotic (living) abiotic (non-living) components constantly interact each other. During these interactions, there is a transfer of nutrients between living organisms and the non-living environment. Thus, there is recycling of inorganic matter between living organisms and their non-living environment. This cycling of matter is called biogeochemical cycles.