Lightning

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

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Az afrikai kontinens földtani formálódása és földrajzi felosztása.

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Nitrogen cycle

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

Local winds

The most important types of local winds are the sea-land breeze, the mountain-valley...

Earthquake

An earthquake is one of the most devastating natural phenomena.

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El Niño

A periodic climate pattern that occurs across the tropical Pacific Ocean every five years.

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