Answer:
D
Explanation:
D is the only option where the cause of the pollution is not something man-made.
The oxygen atoms i believe is the answer
It will be melt in the layer of earth called mantle because mantle has a higher temperature than crust. and as it melt, it will be called magma.
20. Cell Membrane 19. Mitochondria 18.<span> Osmosis</span>
The answer is: Both association with mycorrhizal fungi and presence of root hairs.
