Understanding the Nitrogen Cycle and Earth's Atmosphere

Nitrogen Cycle

Process of nitrogen moving through ecosystems.

Importance of Nitrogen

Essential for DNA and protein synthesis.

Plants and Nitrogen

Plants cannot survive without nitrogen.

Atmospheric Nitrogen Sources

Fertilizer and dead animals introduce nitrogen.

Layers of Atmosphere

Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.

Decomposers' Role

Return nitrogen to soil from dead organisms.

Human Nitrogen Emissions

Factories and vehicles add nitrogen to ecosystems.

Warmest Atmosphere Layers

Thermosphere and Troposphere are the warmest.

Coolest Atmosphere Layers

Mesosphere and Stratosphere are the coolest.

Nitrogen in Ecosystem

Excess nitrogen disrupts ecological balance.