THE NITROGEN CYCLE

DEFINITION BIOGEOCHEMICAL CYCLE

• the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
• the flow of chemical elements between living organisms and the environment.

Biogeochemical cycle

• the biogeochemical cycle can be seen in the transfer through water cycle
• ocean or lake water evaporates and becomes clouds
• clouds become dense with evaporated water and causes rain
• water from rain or melting snow finds its way back to the ocean or lakes
• vater evaporates and the cycle begins again

NITROGEN CYCLE

• Animals produce organic matter. (fertilizer)
• The matter decomposes and forms into a source of energy.
• Plants use that matter also and turn it into energy for other animals. (food)

Untitled Slide

FIVE FACTS ABOUT NITROGEN

• Nitrogen is an element is an element you encounter every day.
• Nitrogen is a nonmetal.
• Nitrogen is found in food, fertilizer, poisons, and explosives.
• Nitrogen is odorless, tasteless, and colorless.
• Nitrogen gas makes up 78.1% of the volume of the air.

THE AMOUNT OF NITROGEN IN THE EARTH'S ATMOSPHERE

OBSERVING BIOGEOCHEMICAL CYCLE

• Use fertilizer to grow a plants.
• Observe decomposing matter.
• Observe herbivores.