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Why does ice covered in sawdust not melt quickly?
Name the international treaty designed to protect the ozone layer from CFCs.
What is the name of first solar mission of Indian Space Research Organisation set to be launch in 2019?
The Equator does NOT pass through which of the following countries?
ABM stands for ______.
Dakshin Gangotri is a research base station set up by Indian scientists. Where is it located?
Earth revolves around Sun. Who was the 1st one to present this theory?