Unit 4 Test Review

Front

The process of breaking down organic matter to release carbon dioxide is known as _______.

Back

Combustion

Front

Which organism nitrifies atmospheric nitrogen into a usable form for plants?

Back

Soil bacteria

Front

What is the effect called when gases trap heat in the atmosphere?

Back

Greenhouse Effect

Front

Which cycle is essential for the movement of water through the environment?

Back

Water cycle

Front

What should a student add to an aquarium to help remove nitrates and improve the natural cycling of nitrogen?

Back

Plants

Front

What is the primary gas released during combustion?

Back

Carbon dioxide

Front

What is denitrification?

Back

The process by which bacteria convert nitrates into nitrogen gas, returning it to the atmosphere.

Front

What role do plants play in the nitrogen cycle?

Back

Plants absorb nitrates from the soil, using them to grow and produce energy.

Front

What is the main purpose of the water cycle?

Back

To circulate water through the environment, including evaporation, condensation, and precipitation.

Front

What is nitrogen fixation?

Back

The process of converting atmospheric nitrogen into a form usable by plants, typically done by certain bacteria.