Cycles of Matter

Front

What is the process in which nitrogen circulates and is recycled?

Back

The nitrogen cycle.

Front

How do animals obtain the nitrogen they need?

Back

From the food they eat.

Front

What is the process called when water vapor turns into liquid water?

Back

Condensation.

Front

What cycle involves the movement of carbon through the environment?

Back

The carbon cycle.

Front

What happens to carbon when humans burn fossil fuels?

Back

Most of the carbon quickly enters the atmosphere as carbon dioxide.

Front

What is the process of water vapor turning into clouds?

Back

Condensation.

Front

What is the term for the continuous movement of water on, above, and below the surface of the Earth?

Back

The water cycle.

Front

What is the process called when water falls from the atmosphere to the Earth?

Back

Precipitation.

Front

What is the term for the movement of water from the land to the atmosphere?

Back

Evaporation.

Front

What cycle involves the movement of phosphorus through the environment?

Back

The phosphorus cycle.