Answer:
Water
Explanation: I think this is the answer if I am wrong please tell me thank you.
The answer is B. Light microscope
Ecology is the study of the relationship between living organisms and their environment. An ecologist is someone who studies those relationships. An ecosystem is a place, such as a rotting log, a forest, or even a schoolyard, where interactions between living and non-living things occur.
False. Intrinsic Factor is necessary for absorption of B12 from the intestine.