The living organisms within a specific area and their physical environment define an _____________.

Algae, bacteria, fungi, plants and animals are all __________ factors in an ecosystem.

Large regions characterized by certain conditions such as climate are called ___________. Major examples are desert, forest, grasslands, and tundra.

Land, marine, and freshwater are examples of ___________.

__________ are nonliving components of an ecosystem.

Water, sunlight, soil, air, and temperature are examples of ____________ factors.

_____________ allow organisms to become adjusted to new conditions in their environment.

Which is NOT a structural adaptation?

Which is NOT a behavioral adaptation?

Why would a polar bear have white fur?

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