The answer would have to be D
The living things SPONCH stands for is <span>sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen.</span>
Option C Habitat.... Polar bears are only found in the Arctic. The most important habitats for polar bears are the edges of pack ice where currents and wind interact, forming a continually melting and refreezing matrix of ice patches and leads (open spaces in the ocean between sea ice).
I would think A - Volcanic eruptions can cause both global warming and global cooling.
A and b are cells so they definitely are not bacterium so c and d are bacterium I think. Your welcom.