C) would be the answer. I just did a test w/ this question and I picked C) and got !00%
The role of species in an ecosystem, consisting of such things as what it eats, when it eats, and where it lives is niche.
Answer:
A. By burning coal in a boiler to produce steam. The steam produced, under pressure, flows in a turbine, which spins a generator to create electricity
B. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity
It is Big Bang and cannot be proved. A hypotheses must be testable. Big Bang is not testable.