Habitate and Niche help?

Question

how do spruce trees use other things (nonliving and living)

Would an answer be that it uses light, soil, water, and carbon dioxide?

What eat beetles?
and
What is the Beetles habitat?

Is the answer that they live in mostly all habitats exept in the sea and polar regions?

Answer 1

Well, that's a good start; you've named off several non-living things that spruce trees use, so that's fine. Living things would be a bit trickier; I'm not sure about spruces, but there are trees that use living things in one way or another.
Now for beetles - you still need to answer what eats beetles (that's a pretty wide question, because there are so many kinds of beetles, and they may be eaten by different things, or not eaten at all). As for habitat, I would say you're pretty close - beetles are remarkably successful animals and have managed to find a way to live in almost every kind of habitat imaginable. It might not hurt to give some examples, though; perhaps throwing in some of the more extreme types of habitat that beetles may be found.

Answer 2

spruce trees do use all of those things in their habitat, but those are only abiotic factors. What biotic (living things) do they benefit from or are harmed by?
a habitat is simply where an organism lives. The habitat will include any abiotic or biotic factors within that area (ie rocks, trees, other animals (predators, like birds), etc.)