To preserve the vast diversity of plants and animals we should conserve these resources and use them judiciously. A great variety of plants and animals exist on earth. They are essential for the well-being and survival of mankind. Biosphere reserves are the areas meant for the conservation of biodiversity. Biodiversity is the variety of plants, animals and microorganisms generally found in an area. The biosphere reserves help to maintain the biodiversity and culture of that area. A biosphere reserve may also contain other protected areas in it. s. Wildlife Sanctuaries like reserve forests provide protection and suitable living conditions to wild animals. Some threatened wild animals like blackbuck, white-eyed buck, elephant, golden cat, pink-headed duck, gharial, marsh crocodile, python, rhinoceros, etc., are protected and preserved in our wildlife sanctuaries. Deforestation can be prevented by Reforestation. Reforestation is restocking of the destroyed forests by planting new trees. The planted trees should generally be of the same species which were found in that forest.