The field that studies living things is called

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Biology is the science that studies living things. It covers what living organisms are made of, how they function, grow, reproduce, evolve, and interact with each other and their environments. Physics and chemistry focus on nonliving matter and energy, and the interactions of substances, while ecology is a subfield within biology that specifically looks at how organisms interact with their environment and with one another. So the broad field that studies living things is biology.