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Ozone-hole in the atmosphere is largely caused by the presence of:
Mangrove forests occur in:
Which of the following metals contribute to bio magnification problem in the ecosystem?
Why the Earth is having its own atmosphere?
The Milky Way Galaxy was first observed by:
The largest current, because of its dark waters is known as the ‘black current’ and that is:
Spot the odd item of the following:
Sink hole is a phenomenon of topography.
Which among the following is false about Earth?
The ‘Pacific Ring of Fire’ is associated with: