Karstification

The dissolution of limestone results in the development of karst formations.

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Carbon cycle

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Polluting natural waters

Water is one of our key natural resources; we must protect it vigorously.

Taiga climate

Among the climate zones with the greatest extremes, the taiga only formed in the Northern...

Mid-latitude cyclone and anticyclone

Cyclones are large areas of circulating air with clouds and precipitation being formed in...

Solar eclipse and lunar eclipse

We can observe quite interesting astronomical phenomena when the Earth, the Sun and the Moon align.

Why is seawater salty?

Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...

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...

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