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Layers of the Atmosphere 

The Atmosphere

Where are we now, and where are we going? 

The Earth as a System

Earth's Spheres #1

Earth's Spheres #2 

The Four Great Realms 

Interaction between Earth's spheres

Sphere by Sphere - PPT Central 

The Earth System

The Stuff of the Universe - Cycles 

Matter is constantly recycled on earth 

Atmosphere and Humans 

Population and the Environment 

Human Environment Interaction 

The Biosphere 

Biogeochemical Cycles

The Climate System 

Earth as a Planet

See Also: Climate, Weather, Environment, Water Cycle

For Kids

The Atmosphere 

The Earth's atmosphere

Interactions with the lithosphere (movie)

Where is the hydrosphere? 

Our Great Lakes - part of the hydrosphere 

For Teachers

Atmospheric layers (lesson)

Atmosphere

Earth's Atmosphere (emints)

Hydrosphere links

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