Biogeochemical cycles quiz

Burning fossil fuels coupled with deforestation increases the amount of _____ in the atmosphere

• phosphorus

• carbon dioxide

• ozone

• sulfur dioxide

• all of these

Where do animals get nitrogen from?

• soil
• air
• water
• plants

How does carbon dioxide leave the atmosphere?

• Through transpiration
• Through photosynthesis
• Through factory emission
• Sunlight

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

What is evaporation?

• a liquid changing to a gas
• animals breathing out condensation
• water vapor
• precipitation

Organisms use nitrogen to form

• carbohydrates and lipids
• proteins and lipids
• lipids and nucleic acids
• proteins and nucleic acids

What is the main human source that emits Carbon Dioxide?

• Combustion of fossil fuels (natural gas, coal, and oil)
• Cement Production
• Deforestation

The nitrogen found in the atmosphere is not in a form that plants or animals can use. What converts it into a usable form?

• Bacteria

• Photosynthesis

• Decomposition of organisms

• Fungi

What does not produce carbon dioxide?

• Photosynthesis

• Burning fossil fuels

• Animal respiration

• Plants decaying

In the carbon cycle, producers take in the gas __

• carbon dioxide

• oxygen

• carbon monoxide

• nitrogen