Above a certain altitude snow does not melt, not even in summer.
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life...
Still waters take various forms on the planet. Let’s take a look at how we can group them.
An earthquake is one of the most devastating natural phenomena.
Seawater, as an external force, plays an important role in shaping coastlines.
Wind, as an external force, plays an important role in shaping deserts.
This animation demonstrates the most important relief features, surface waters and their...
People have always preferred to settle near rivers. What are the advantages and disadvantages of...