Answer:
they have thin membranes to allow diffusion of substance for short distance
they are numerous to increase the surface area of absorption
hope this helps
I'm not sure but it might be C
The biosphere is most responsible fir the increases of global warming
Answer:
The answer is (C) studying how is has been affected by erosion
Explanation:
Answer:
The answer would be B, they are a source of clean energy.
Explanation: