Lyn

En lyn er en pludselig elektrostatisk udladning ledsaget af en lyd kendt som torden.

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The lungs of the Earth Tropical Rainforests

A trópusi esőerdőkre bolygónk légkörének védelme miatt is vigyáznunk kell.

The Gregorian calendar

Developed nearly 500 years ago, it is a variant of the Julian calendar. Today it is the most...

Jordens topografi

Animationen præsenterer de største bjerge, sletter, floder, søer og ørkener på jorden.

The rock cycle

Due to the effect of both exogenic and endogenic forces, rocks constantly change. This is called...

Where all water disappears The Desert

Földünk felszínének egyhetedét elfoglaló sivatagok kialakulása, éghajlata, felszínformálása.

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