biological diversity( science)
DESCRIPTION
K J Somiaya Comprehensive College of education. PPT presentation of CAPTRANSCRIPT
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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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