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Lesson 1


A living thing.


the type of environment in which an organism or group normally lives or occurs

biotic factor

a living or once living part of an organism's habitat

abiotic factor

a nonliving part of an organism's habitat


a group of organisms so similar to one another that they can breed and produce fertile offspring


all the members of one species in a particular area


all the different populations that live together in an area


a system formed by the interaction of a community of organisms with their physical environment


The study of how living things interact with each other and their environment

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