Oxygen cycle

The oxygen cycle describes the movement of oxygen within its three main reservoirs.

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Carbon cycle

Carbon is bound in organic substances during photosynthesis, while during breathing, it...

Exogenic forces

The surface of the Earth has been formed into its present state both by external and internal...

The phosphorus cycle

The phosphorus cycle describes the movement of phosphorus through the lithosphere,...


It is a sedimentary rock made up of loosely structured, rough grains of rock.

Greenhouse effect

Human activity increases the greenhouse effect and leads to global warming.

Cloud formation

When the temperature of the cooling air reaches dew point condensation occurs because air is...

Topography of the Earth

The animation presents the largest mountains, plains, rivers, lakes and deserts of the Earth.

Underground waters

Groundwater and aquifers are types of underground waters.

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