The soil

Soil is the loose, uppermost, fertile layer of the Earth’s crust.

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Limestone

It is a sedimentary rock with high calcium carbonate content.

Tsunami

Tsunami waves are very high waves of immense destructive power.

Cloud formation, types of clouds

Evaporating surface water forms clouds of various shapes from which water falls back to...

Altitudinal zonation

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

The Jovian planets

The four outer planets (Jupiter, Saturn, Neptune and Uranus) do not have solid surfaces, thus...

Monsoon wind system

In summer, monsoon winds bring heavy rainfall from the sea to the mainland.

Taiga climate

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

The African savannah

The largest contiguous savannah in the world is in Africa. It covers about one-third of the...

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