Biogeochemical Cycles

Front

Which process takes Carbon Dioxide from the air and converts it into a form of carbon used by living things?

Back

Photosynthesis

Front

How does carbon dioxide leave the atmosphere?

Back

Stored in rocks

Front

What is the source of energy that drives the water cycle?

Back

Solar Radiation

Front

Converting atmospheric nitrogen into a usable form by bacteria or lightning is known as _______.

Back

nitrogen fixation

Front

The process by which water, wind, ice, and changes in temperature break down rock into fragments called sediments.

Back

Weathering

Front

Growing legumes such as alfalfa or soy beans increases

Back

nitrogen fixation

Front

Which of the following statements about the nitrogen cycle is false?

• nitrogen can be used from the air by humans
• nitrogen can be fixed by lightning or bacteria
• nitrogen is used to make proteins in the human body
• nitrogen can be released back into the air or the ground after an organism dies

Back

nitrogen can be used from the air by humans

Front

Evaporation is ...

Back

when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam

Front

How do animals get the nitrogen they need?

Back

From the food they eat

Front

Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere

Back

decomposers