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Soil is the loose, uppermost, fertile layer of the Earth’s crust.
The rise and drop of sea levels caused by the gravitational force of the Moon.
The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion...
On a geological time scale lakes are short-lived.
The Earth is divided into geographical and climatic zones, which result in the zonation of...
A geyser is a spring characterised by intermittent discharge of water and steam.
It is a sedimentary rock with high calcium carbonate content.
It is characterised by dry, hot summers and mild winters.