Biogeochemical cycles

Front

What is the largest reservoir for nitrogen?

Back

The atmosphere.

Front

Identify the cycle pictured: The Water cycle, The Carbon cycle, The Nitrogen cycle, The Phosphorus cycle.

Back

The Nitrogen cycle.

Front

The process of plants losing water through their leaves is called ____.

Back

Transpiration.

Front

According to the diagram, geologic activity, such as volcanoes, increases or decreases the levels of CO2 in the atmosphere?

Back

Increases the levels of CO2 in the atmosphere.

Front

After condensation, the droplets of water in the clouds fall to Earth in different forms called ____.

Back

Precipitation.

Front

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

Back

Condensation.

Front

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

Back

The Water cycle.

Front

What is the primary source of carbon dioxide in the atmosphere?

Back

Respiration and combustion.

Front

What role do bacteria play in the nitrogen cycle?

Back

They convert nitrogen gas into forms usable by plants.

Front

What is the process of converting atmospheric nitrogen into ammonia called?

Back

Nitrogen fixation.