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The last Ice Age ended about 13 thousand years ago.
Wind, as an external force, plays an important role in shaping deserts.
The difference between the temperature of the polar and equatorial zones causes...
Cold and warm fronts are formed where bodies of cold and warm air meet.
The four outer planets (Jupiter, Saturn, Neptune and Uranus) do not have solid surfaces, thus...
Bauxite is a raw material in aluminium production. Watch this video to learn how the well-known...
A glacier is a large body of ice that forms from snow, and is in constant, slow motion.
Natural gas and petroleum are among the most important sources of energy and raw materials today.