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A group of living things of different species found in an ecosystem


All the living and nonliving things that interact with one another in a given area.


All the members of the same type of organism living in an ecosystem


A large group of similar ecosystems.


the type of weather that occurs in an area over a long period of time.


A very dry area.


Land covered by grasses with few trees.


An area that has long, severe winters and short, cool summers.

Temperate forests

Forests that experience four distinct seasons: summer, fall, winter, and spring

Tropical Rain Forests

Forests that are both very hot and very rainy


Earth's coldest biome

food chain

A description of how energy in an ecosystem flows from one organism to another.

food web

The description of all the food chains in an ecosystem.

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