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

Labelling

Label the organisms that are part of the Nitrogen Cycle!

Drag labels to their correct position on the image

Nitrifying Bacteria

Nitrifying Bacteria

Denitrifying Bacteria

Decomposers

Nitrogen-Fixing Bacteria