Biogeochemical cycles

What are the swellings found on the roots of legumes called?

• noodles
• nodularisms
• nodules
• tubers

What is the only process that removes carbon from the atmosphere?

• combustion
• cellular respiration
• photosynthesis
• decomposition

These gases, such as carbon dioxide, trap heat in the Earth's atmosphere causing global warming

• Global warming gases
• Hot House gases
• Green House gases
• Thermal pollution

This process is responsible for most environmental problems of excess nitrogen and phosphorus entering streams, lakes and oceans.

• decomposition
• emissions from automobiles
• agriculture and house hold runoff
• photosynthesis

Which of the following is known as the "sedimentary" cycle because its reservoir is sedimentary rock?

• Sulfur cycle
• Nitrogen cycle
• Phosphorus cycle
• Carbon cycle

Phosphorous is needed in organisms for the production of

• ADP and ATP.
• Cellular membranes.
• Deoxyribonucleic and ribonucleic acids.
• All of the answers are correct

This is released by the weathering of rocks.

• Carbon
• Oxygen
• Phosphorus
• Nitrogen

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle.

How do animals get nitrogen?

• the atmosphere 
• eating other organisms
• rainwater
• lightning