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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Eratosthenes

The circumference of the Earth has already been calculated in ancient Egypt. The calculations...

Types of lakes

Still waters take various forms on the planet. Let’s take a look at how we can group them.

How do seas shape the Earth's surface?

Seawater, as an external force, plays an important role in shaping coastlines.

Mediterranean climate

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

Solar radiation

The Sun's rays travel through space without interruption, but once they reach the Earth's...

The phosphorus cycle

The phosphorus cycle describes the movement of phosphorus through the lithosphere,...

Formation of stratovolcanoes

Stratovolcanoes consist of layers of volcanic ash, debris and lava.

The Wallace line

Ázsia és Ausztrália állatvilága a Wallace-vonal mentén különül egy egymástól.

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