There is a protocol signed to reduce production of CFC, known as
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Equinox means the date when ___________.
Salination of soil is caused by
In 1981, ISRO launched India's first geostationary satellite called -
Concentration of water vapour in troposphere is
The Great Smog of 1952 was a severe air-pollution event which affected _______.
What is the name of first solar mission of Indian Space Research Organisation set to be launch in 2019?
Which one of the following bio reserves of India is not included in the World Network of Biosphere Reserve?