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In a desert region, soil erosion can be checked by:
Which planet is called evening star?
Most of the devastating earthquakes are usually caused by:
The longest river in Asia is:
Widening of a river valley takes place due to:
The planet revolving east to west is:
Which one of the following practices is adopted for restoring the fertility of soil?
Breaking down of rock in situ is known as:
Winds blowing constantly in one direction in rocky deserts form:
The Earth rotates on its axis at an inclination of: