Changes in Ecosystem, Biomes, Water Ecosystems

The process where water turns into water vapor.

water vapor cools and changes back into liquid droplets, forming clouds.

Water falls from clouds as rain, snow or sleet.

An area of land where all the water drains into a common waterway, like a river.

Water that flows over the ground, often into rivers or lakes.

Water stored beneath the Earth's surface

The process where carbon is exchanged between the atmosphere, plants, animals, and the Earth. Plants absorb carbon dioxide (CO2) during photosynthesis, and animals release it during respiration.

The movement of nitrogen through the environment, including the air, soil, and living organisms. Bacteria in the soil help convert nitrogen into forms plants can use.

Organic material that has decomposed and can be used to enrich soil.

A species that no longer exists anywhere on Earth.

• Extinct

• Endangered

• Threatened

• Succession