The atmosphere

The atmosphere surrounds us everywhere on this planet. We take its presence so much for granted that we often manage to forget it.

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Why is seawater salty?

Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...

Plate tectonics

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

Underground waters

Groundwater and aquifers are types of underground waters.

The water cycle (intermediate)

Water on Earth is in a continuous state of change. The water cycle includes processes such as...

Tectonic plates

Tectonic plates can move in relation to each other.

The subtropics

The subtropics are located between the tropical and temperate zones, between 23.5° and 40°...

The rock cycle

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

Climate zones

The Earth is divided into geographical and climatic zones, which result in the zonation of...

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