Answer:
C. the lipid bilayer is responsible for keeping out unwanted materials.
Explanation:
They could reduce greenhouse gases and they could stabalize the oil market.
Answer: the answer is A
Explanation: i just did it
Answer:
They protect the body from infectious agents.
And
They signal the immune system to destroy pathogens.
Explanation:
I HOPE THIS HELPS
there is a zero percent chance do to the sterilization and cleaning of all equipment as well as it being illegal to reuse needles in hospitals