Biogeochemical Cycles Review

Biogeochemical Cycles Review

Stages of the Nitrogen Cycle

Multiple Choice

Atmospheric Nitrogen (N2) can be used by plants.

• True

• False

Multiple Choice

Which of the following is used to change nitrogen in the air into ammonium (NH4+) during nitrogen fixation?

• Fungi

• Protists

• Bacteria

• Animals

Open Ended

In your opinion, why is nitrogen fixation so important?

Multiple Choice

What is photosynthesis?

• Special bacteria in plant roots

• Process that plants use to allow carbon to enter an ecosystem

• Process that carnivores use to make their own food

Multiple Choice

Where does most of Earth's available carbon come from?

• Photosynthesis

• Animal Respitation

• Combustion

• Decomposition

Multiple Choice

What stage of the carbon cycle is represented by D.

• Photosynthesis

• Combustion

• Respiration

• Evaporation

Multiple Choice

What stage of the carbon cycle is represented by A.

• Photosynthesis

• Combustion

• Respiration

• Evaporation

ANIMALS & CARBON

Animals are IMPORTANT

*They eat plants that have CARBON

*They release CARBON when they die and DECOMPOSE

Multiple Select

How does carbon enter the atmosphere? (Select ALL that apply)

• Cellular Respiration

• Plant Transpiration

• Fossil Fuels Burning

• Volcanic Eruptions