Answer: I think you meant scientists and scientists often gather new knowledge by studying the experiments of others
Explanation:
Certain types of rocks form deep inside earth:)
Carbon cycle is process that shows the exchnge of carbon in the living and atmospheric system. Carbon cycle starts with the giving off of carbon dioxide from nimals, accumulation of co2 of plants, contribution of organic matter of dead animals and plants, photosynthesis, etc. The answer is D. fermentation
The movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.
