Nitrogen cycle

Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of various compounds.

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Greenhouse effect

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

Exogenic forces

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

Oasis

Within the lethal embrace of deserts, life can only flourish because of large springs. Here...

Seafloor map

The boundaries of tectonic plates can be seen on the seafloor.

Altitudinal zonation

In mountainous areas the climate, soil properties, the flora and fauna change depending...

The development of lakes

Standing bodies of water can form in depressions on the surface by both endogenic and...

Layers of the ocean

Physical properties, as well as the flora and fauna of the ocean change with depth.

Waves

Waves play an important role in forming the coast.

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