Explain how the following terms are relat- ed to one another: community, ecosys-
tem, feeding level, habitat, niche,
population, species.

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

What is the importantence of the carbon and nitretan cycles in the environment

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation