A group of similar organisms that can mate with each other and produce fertile offspring

preserved remains or traces of an organism that lived in the past

A trait that helps an organi8sm survive and reproduce

a well-tested concept that explains many observations

an effect caused by species producing more offspring than can survive

any differences in individuals of the same species

organisms competing for resources

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Question	Answer
species	A group of similar organisms that can mate with each other and produce fertile offspring
fossil	preserved remains or traces of an organism that lived in the past
adaptation	A trait that helps an organi8sm survive and reproduce
theory	a well-tested concept that explains many observations
overproduction	an effect caused by species producing more offspring than can survive
variations	any differences in individuals of the same species
competition	organisms competing for resources
natural selectio