A biome in which grasses predominate.

This biome receives less than 25 cm of rain per year, has a high evaporation rate, and can experience a wide range of temperatures.

Comprised of deciduous trees, this biome experiences four definite seasonal changes annually.

Regions of the Earth characterized by distinct plants and animals.

Made up primarily of cone-bearing trees, this biome is located just south of the tundra.

A scientist who studies the relationship between organisms and their environments.

Located in the equatorial regions, is biome experiences heavy rainfall throughout the year and a constant very warm temperature.

Is where a community if plants & animals & nonliving things live together.

Part of Earth in which life exists including land, water, and air or atmosphere; Near to the earth's surface.

Overall weather in an area over a long period of time.

The falling to earth of any form of water (rain or snow or hail or sleet or mist).

Permanently frozen layer of soil beneath the surface of the ground, in the tundra.

The wide part of a river where it nears the sea. Ex: Mud flats, Salt marshes, swamps.

A change or the process of change by which an organism or species becomes better suited to its environment.