Differentiate between the following : [NCERT]1) Wildlife sanctuary and Biosphere reserve.2) Zoo and Wildlife sanctuary.3) Endangered and Extinct species.4) Flora and Fauna.

1) Wildlife sanctuary is a reserve area where wild animals are protected and preserved. Biosphere reserves are the areas meant for conservation of biodiversity, i.e., variety of plants, animals and microorganisms. . 2) Zoo is a place where animals live in artificial settings for public display. Wildlife sanctuary is a place where animals live in their natural habitat within a protected area. 3) Endangered species are those whose number are diminishing and are facing extinction. Extinct species are those which are already finished. 4) Flora are the plants found in a particular area and fauna are the animals found in a particular area.