Nitrogen Cycle

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Multiple Choice

What is the definition for Biogeochemical Cycles?

• The process of photosynthesis and respiration in plants.

• A pathway for chemicals necessary for life to move through the environment. 

• The movement of energy through living organisms in an ecosystem.

• The study of the interactions between organisms and their environment.

Match

Match the following

• Nitrogen Fixation

• Nitrification

• Ammonification

• Denitrification

Bacteria fix N2 into NH3

Bacteria change NH3 & NH4 into NO3 & NO2

Decomposers change N into NH3 or NH4

Bacteria make atmospheric N2

• Bacteria fix N2 into NH3

• Bacteria change NH3 & NH4 into NO3 & NO2

• Decomposers change N into NH3 or NH4

• Bacteria make atmospheric N2

Labeling

Label the organisms that are part of the Nitrogen Cycle!

Drag labels to their correct position on the image

Nitrifying Bacteria

Nitrogen-Fixing Bacteria

Decomposers

Nitrifying Bacteria

Denitrifying Bacteria