The World of the seas

Seas and oceans cover almost three-quarters of the Earth’s surface. 97.5% of the total hydrosphere is saltwater.

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Factors of warming

The duration of solar radiation, the angle of the Sun's rays and the surface albedo all have an...

Exogenic forces

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

Solar eclipse and lunar eclipse

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

Nitrogen cycle

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

Glacier (intermediate)

A glacier is a large body of ice that forms from snow, and is in constant, slow motion.

Fascinating atmospheric phenomena

We can often observe spectacular atmospheric phenomena. Let's see how some of these are formed.

The soil

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

Underground waters

Groundwater and aquifers are types of underground waters.

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