生物多样性biodiversityPPT

1、BIODIVERSITY Group 1 Biodiversity 1. The importance of biodiversity.2. Diversity in diet helps preserve species. 单击添加副标题单击添加副标题单击添加副标题单击添加副标题单击添加副标题单击添加副标题单击添加副标题单击添加副标题Outline Topic 1 : The importance of biodiversity Introduction (Para 1) Thesis statement: The most important reason to preserve biod

2、iversity is for human survival. Body (Para 2-5) Para 2: Topic sentence: Biodiversity is a source of medicine. Para 3: Topic sentence: Biodiversity is important for agriculture. Para 4: Topic sentence: Biodiversity is also important for diet and health. Para 5:Topic sentence: Biodiversity is crucial

3、for keeping climate in balance and providing plants that can grow in different climates. Conclusion (Para 6) Thesis restatement: Maintaining biodiversity is important for our well-being. Introduction Paragraph 1: The most important reason to preserve biodiversity is for human survival.Rich species i

4、n the tropical rainforestsDeforestationRoughly 100 species loss a dayThe loss of biodiversity is one of the greatest problems for us.for the potential medical value the importance of biodiversity for agriculturehumans diet and healthglobal warming and its fatal inluence on food speciesbody: sufficie

5、nt reasons for preserving biodiversityBodyTopic sentence (Para 2) :Todays apparently useless species may contain tomorrows medicine.Argument:the drug penicillin working as antibiotic was developed from simple bread mold.the medicine for malaria ,quinine comes from cinchona.Only one plant species in

6、a hundred has been tested for possible applications for human health.Topic sentence (Para 3) :Besides being a source of medicine,biodiversity is also important for agriculture.Counter example :The disappearence of native wheat varieties in Greece. Worlds Race is mainly grown in Asia ,but only a few

7、species.Irish potato famine is devastating.Biodiversity reduces these risks ,and gets new crossing-breeding types against disease and insects.Doctor recommend a much wider variety of food for good health.Topic sentence (Para 4) :As for diet and health More than 10000 edible plant species in historyb

8、arely 150 grown for human diet now.Topic sentence (Para 5) :There are two other reasons for preserving biodiversity, both connected to global warming.Tropical rainforests burning realeses much carbon dioxide,making global warming worse.The climate change caused by global warming may destroy our food

9、 species.Biodiversity may be crucial for providing plant species that can grow in different climate.vMaintaining biodiversity is important for our present and future well-being ,and perhaps our survival. vthesis statement We must preserve a diversity of species for the well-being of human.Conclusion

10、Para 6:v Deforestation: cutting down the forestv Penicillin : a common kind of antibioticv Mold :a green growth of fungus on things that sit in warm、wet air v Malaria：a infectious disease caused by insect v Quinine: a basic nitrogen compound v Cinchona: a plant can be drug for quinine v Edible: food

11、 or some thing eatable v Irish: a Western European countryVocabularyvSome say we should save species for their own sake . for their own sake: in order to please or honor them vTodays apparently useless species may contain tomorrows medicine apparently: obviouslyvIn fact, biodiversity may be crucial for providing species that can grow in different climates. be crucial for: very important SentencevEndangered animals Chinese sturgeon White whale Giant salamanderSpotted seals Sea turtleExpansionvEndangered a