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How much of the Earth’s land surface is desert?
With what bio-region is the term ‘‘Steppe’’ associated?
A day is added when one crosses
The remedies to soil erosion are:
I. Contour bunding
II. Regulation of land use
III. Cutting of trees
IV. Allowing grazing of animals
Very strong and cold icy winds that blow in the Polar regions are called:
Tropical storm in Chinese Sea is known as–
Which one of the following is the correct sequence of ecosystem in the order of decreasing productivity?
Earthquakes are generally associated with:
Smog is a combination of:
Which of the following is the most abundant metal on Earth’s crust?