Hi can someone check my answer? I believe its C.

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

What are the student's observations and inferences before he starts his investigation?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above