Which of the following gas contributes the maximum to the phenomena of global warming?
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___________ is the process of restoring a forest that once existed but was removed at some point of time in the past.
Cannis Vulpes is the scientific name of
The arrangement of leaves on an axis or stem is called
Which of the following causes rainfall during winters in the north-western part of India?
Sandstone is which type of rock?
The longest day of the year in the Northern Hemisphere occur on _____.
First man to go into space was