The atmosphere

The atmosphere surrounds us everywhere on this planet. We take its presence so much for granted that we often manage to forget it.

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Tornadoes

Short-lived but extremely powerful tornadoes can cause a great deal of damage.

Geyser

A geyser is a spring characterised by intermittent discharge of water and steam.

Ozone layer

The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for...

The moon

What secrets does the Moon have? Who were the first men on the Moon? You’ll find out everything...

Polluting natural waters

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

The formation of fog

Fog is a type of cloud that forms close to the surface of the Earth. There are places on the...

Folding (intermediate)

Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.

Carbon cycle

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

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