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Presented By : Fatima KhairSubject : ScienceStandard : VIIITopic : Biological Diversity

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•Meaning•Loss of biodiversity•Conservation of biodiversity

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•Biodiversity is the great variety of species that exist on the earth

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•All the species are interdependent on each other

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•Loss of a single species can begin a chain reaction of destruction

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Contributes to 8% of total number of Species i.e 1.75 million (as per Global Biodiversity Assesment of UNEP-1995)

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Main reason for loss of biodiversity

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Single crop method of

farming

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Most critical threat to marine biodiversity

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Oil pollution (Exxon Valder accident in Alaska)

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Dumping of garbage at sea

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•Potent threat to biodiversity

•Endemic species not able to survive

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•One – eight of plant species are threatened with extinction

•1,40,000 species are lost every year

•Up to 2030, 50% of Earth’s species are estimated to become extinct

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1.Creating National Parks and SanctuariesSunderban national park Bird sanctuary

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3.Undertaking certain projects to nurture specific species

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1.What is the meaning of biodiversity?Ans: The great variety of species that exist in the

earth.

2.Why is it important?Ans: All species are interdependent on each other and

a loss of single species can begin a chain reaction of

destruction

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3.What are the reasons for loss of biodiversity?Ans: Population explosion,habitat destruction,global warming etc.

4.How has global warming affected biodiversity?Ans: Global warming has resulted in climate change at

such a fast pace that it has become impossible for

species to adapt to it.

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5.What are the measures taken to conserve biodiversity?Ans: Creating National Parks and Sanctuaries, declaring some areas as Reserved Biodiversity Zones etc.

6.Why is biodiversity conservation “need of the hour”?Ans: So many plants and animals are headed towards extinction. To maintain the ecological balance

every species is equally important.

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