A place where animals are protected in their natural habitat is called ________________.
Species found only in a particular area is known as____________.
Migratory birds fly to far away places because of __________ changes.
Differentiate between the following :Wildlife sanctuary and biosphere reserve.
Differentiate between the following :Zoo and wildlife sanctuary.
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(c) Increase in levels of carbon dioxide
The Correct answer is: (c) Increase in levels of carbon dioxide