Carbon & Nitrogen Cycles

Front

What percentage of our atmosphere is made up of nitrogen gas?

Back

78%

Front

Which gas dissolves in the ocean and is used in Photosynthesis for aquatic plants?

Back

Carbon dioxide

Front

What type of bacteria change nitrates back into nitrogen gas?

Back

Denitrifying bacteria

Front

What process of the nitrogen cycle occurs in the roots of plants?

Back

Nitrogen fixation

Front

What is the general name given to the bacteria that fix nitrogen for plants?

Back

Nitrogen Fixing bacteria

Front

What is the process called where nitrogen gas is converted into ammonia?

Back

Nitrogen fixation

Front

What role do denitrifying bacteria play in the nitrogen cycle?

Back

They convert nitrates back into nitrogen gas, releasing it into the atmosphere.

Front

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

Back

Respiration and combustion of fossil fuels.

Front

How do plants contribute to the carbon cycle?

Back

Through the process of photosynthesis, plants absorb carbon dioxide.

Front

What is the term for the process where carbon is released back into the atmosphere from living organisms?

Back

Respiration