a large region characterized by a specific type of climate and certain types of plant and animal communites.

A treeless wetland ecosystem were plants such as grasses grow.

Any formof water that falls from earths surface from the clouds.

The number and variety of orgamisms in a given area during a specific period of time.

Microscopic organism that float or drift freeley in fresh water and marine ecosystem.

A treeless plain found in the Artic, in the Antarctic or on the tops of mountains that is characterized by very low winter temperatures and short, cool summers.

An area where fresh water from rivers mixes ith salt water from the ocean.

An area of land that is periodically underwater or whose soil contains a great deal of moisture.

A wetland ecosystem in which shrubs and trees grow.

A grassland that often has a scattered trees and that is found in tropical and subtropica areas where seasonal rains,fires. and drought happen.

A biome with coniferous trees and a cold climate.

An area between the polar areas and the tropical areas.

Ground that is permanently frozen

Trees that lose their leaves in fall.

The amount of precipitation and temperature in an area over long periods of time.

Having to do with land

A region that has little or no plant life, long periods without rain, and extreme temperatures; usually found in hot climates.

Trees with needles and cones that are evergreens.

Having to do with saltwater

An area between the tropic of cancer and the tropic of capricorn, year round hot and wet

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