Cycles of Matter

Front

What is another name for rain, or snow?

Back

Precipitation

Front

What causes an increase in atmospheric Carbon dioxide?

Back

Factories releasing fossil fuels.

Front

Which organisms need nitrogen to survive?

Back

All living organisms.

Front

Why must nitrogen fixation take place?

Back

Atmospheric nitrogen is unusable to plants and animals.

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 ground to the atmosphere?

Back

Transpiration.

Front

What is the role of bacteria in the nitrogen cycle?

Back

Bacteria help in nitrogen fixation and decomposition.

Front

What is percolation in the water cycle?

Back

The process of water filtering through soil and rock layers.

Front

What is the main source of nitrogen for plants?

Back

Nitrogen-fixing bacteria in the soil.

Front

What is the significance of the carbon cycle?

Back

It regulates the levels of carbon dioxide in the atmosphere.