Cyclones are large areas of swirling air with clouds and precipitation being formed inside.
Wind, as an external force, plays an important role in shaping deserts.
Rocks are a composed of minerals. These minerals can often be found in their pure forms.
The duration of solar radiation, the angle of the Sun's rays and the surface albedo all have an...
The oxygen cycle describes the movement of oxygen within its three main reservoirs.
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life...
The rise and drop of sea levels caused by the gravitational force of the Moon.
One third of the continents is covered with desert. Today, desertification is a growing problem.