The Answer is A.) Cytoplasm
Carbon dioxide is released. Carbon dioxide is a greenhouse gas. (<span>Greenhouse gases trap heat from the sun in the Earth's atmosphere, causing temperatures to become hotter than normal) fossil fuels are non-renewable resources.</span>
D. living things as a reservoir
The answer to your question is,
A. sewage treatment plant
-Mabel <3
I'd also say that the morphology presented in this picture is filamentous.
The reason for my believing this is that filamentous morphology concerns long visible chains, threads, or filaments, which you can see in the image.