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英语演讲-生物多样性缺失-蔡杭安

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2021-02-26 05:06
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2021年2月26日发(作者:刺猬头)


December 6, 2013






Anhui University Of Science & Technology










































Environmental Engineering 10 Grade Class 2





























































Written by CaiHangan





















Loss of Biodiversity


Biodiversity


remains


a


preoccupation.


This


report


aims


to


introduce


the


definition


of


biological


diversity


and


it



s


relation


with


human


beings,


and


describe the detrimental impact on the environment caused by the reduction of


biodiversity, with some measures attached for biodiversity conservation.








What is the biodiversity?


Ecologically speaking, as its name suggests,


it refers to the sum of all kinds of organism on the earth. It’s not


just a matter of


tigers


and


whales,


or


butterflies


and


trees,


but


a


matter


of


bacteria,


virus,


fungus (


真菌)


and the other known or unknown species.







Biodiversity and the entire human race are closely related.


It



s com-


mon sense that nowadays


















the


world



s


biodiversity


is


decreasing


rapidly


and


this



decrease has badly affected


the


earth


health.


Without


trees,


we


won



t


be


able


to


survive. Without the natural


microbial (


微生物的


) friends,


there would be hundreds of


billion


tons


of


waste


left


in


the


world


which


would


definitely


contaminate


the


land around us.







We create automobile, we invent aircraft, so we need energy. We have


large


coal


reserves,


so


we


make


power.


If


there


were


no


resources


on


this


planet, neither would be industrial revolution. But because of the electricity and


transportation, we have a good performance on development. However, what


is


unfortunate


is,


due


to


the


production


of


various


products,


the


process


produce more pollutants than product itself. Undoubtedly, these pollutants lead


to


the


pollution


that


results


in


the


decrease of biodiversity.







Lots


of


people


know


that


the reduction of biodiversity will


bring adverse effects


. But few is


crystal


clear


about


the


full


course


of


the


interaction


between


them.


I


don



t quite comprehend that how


it works nor am I good at exploring


the


truth,


but


I


have


my


own

-


-


-


-


-


-


-


-



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