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Waterfalls form where the river flows over a steep precipice in its course.
The animation presents the largest mountains, plains, rivers, lakes and deserts of the...
It is a sedimentary rock with high calcium carbonate content.
One third of the continents is covered with desert. Today, desertification is a growing problem.
Tsunami waves are very high waves of immense destructive power.
Vertical forces can break up layers of rock into fault blocks, which then move...
Sea and land breeze form because of the differing warming of land and sea.
A periodic climate pattern that occurs across the tropical Pacific Ocean every five years.