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2.3 Populations

Across
any individual living thing
all the living and nonliving things that surround an organism
all the living or once living parts of an ecosystem
a species that is in danger of extinction due to its low number of remaining individuals
the many different types of life that exist in an environment
to rely on
a model that shows many different feeding relationships among living things
an animal with a backbone and an internal skeleton
Down
all the nonliving parts of an ecosystem
the group of organisms of the same species living in the same area
Species with a strong influence on its ecosystem
describes a species of animals that once lived on Earth but which no longer exists
the location in which an organism lives
A species considered to be facing a high risk of extinction in the wild.
a group of different populations that live together and interact in an environment
all the living and nonliving things in an area that interact with each other
a group of organisms that share similar characteristics and can mate with each other to produce offspring