The soil

Soil is the loose, uppermost, fertile layer of the Earth’s crust.

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The rock cycle

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

Protecting natural waters

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

The Earth’s magnetic field

The Earth’s magnetic North and South poles are located near the geographic North and South poles.

The process of physical and chemical weathering

Upon physical weathering the rock only falls into pieces, whereas during chemical weathering its...

Tsunami

Tsunami waves are very high waves of immense destructive power.

Plate tectonics

Plate tectonics is a theory dealing with the movement of plates.

El Niño

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

Exogenic forces

The surface of the Earth has been formed into its present state both by external and internal...

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