The centre of a cyclone is a calm area, it is called the ________ of the storm.
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Pollination by wind is called?
What is the sound made by seal called?
Longest day in the Northern hemisphere is ________.
The association of animals in which both the partners are benefitted is known as
Which of the following causes rainfall during winters in the north-western part of India?
Charcoal can be made at home by burning
_________ affect the rate of humus formation of soil.