The terrestrial planets

A glacier is a large body of ice in constant, slow motion down a hillside.

Waterfalls form where the river flows over a steep precipice in its course.

We can observe quite interesting astronomical phenomena when the Earth, the Sun and the Moon align.

On a geological time scale lakes are short-lived.

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

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

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

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