Question

difference between
1) Wildlife sanctuary and Biosphere reserve

2) Synthetic fibres and natural fibres​

Answer 1

The difference between National Parks & Wildlife Sanctuaries is that no human activity is allowed inside National Parks while limited activities are permitted within Wildlife sanctuaries. In biosphere reserves limited economic activity ( sand mining and stone mining ) is permitted.

Natural fabrics—such as cotton, silk and wool—are made of animal or plant-based fibres, while synthetics are man-made and produced entirely from chemicals to create fabrics like polyester, rayon, acrylic, and many others. ... But natural fibres are found naturally on our planet without being scientifically invented.

Answer 2

Answer:

Wildlife Sanctuary :An area where only animals are protected . Biosphere reserve :A large protected area for the conservation of wildlife , plant and animal resources . ... A Sanctury is: An area reserved for the protection of the distubance to the wildlife and their natural habitat.