The water cycle (basic)

Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.

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Glacier (intermediate)

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

Mediterranean climate

It is characterised by dry, hot summers and mild winters.

Mountain climate zones

The decisive factor that determines the climate zones of mountains is the altitude above sea level.

Polluting natural waters

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

Aeolian landforms in deserts

Wind, as an external force, plays an important role in shaping deserts.

Tropical cyclones

Cyclones are large areas of swirling air with clouds and precipitation being formed inside.

Lightning

Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.

Weather and climate

Climate is the typical weather of a certain region that changes practically only on a geological...

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