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The main advantage of Rain? Water Harvesting (RWH) is:
A geyser is a spring which:
Which one of the following types of erosion is responsible for the formation of Chambal Ravines?
Which of the following layers of the atmosphere makes Radio Communication possible?
Depression formed due to deflating action of winds are called:
Which of the following is an organic rock?
A wide inlet of the sea usually concave in shape, is termed as a:
In a desert region, soil erosion can be checked by:
Which planets do not have satellites revolving around them?
Which is the most stable eco-system?