Biogeochemical Cycles

Front

Where is most water found on Earth?

Back

Most water on Earth is found in oceans.

Front

What is it called when plants give off water vapor as a waste product?

Back

This process is called transpiration.

Front

What percentage of the atmosphere is nitrogen?

Back

78% of the atmosphere is nitrogen.

Front

What may happen if the snowshoe hare was removed from the food web?

Back

The shrew population would decrease due to being the only food source for hawks.

Front

What is an organism that makes its own food by using sunlight or chemicals?

Back

This organism is called a producer.

Front

What is the process by which water vapor turns into liquid water?

Back

This process is called condensation.

Front

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

Back

This process is known as evaporation.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil.

Front

What is the term for organisms that cannot produce their own food and must consume other organisms?

Back

These organisms are called consumers.

Front

What is the primary source of energy for the Earth's ecosystems?

Back

The primary source of energy is the Sun.