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10.EnvironmentProblems

基本词汇：ecologicalbalance生态平衡；sustainabledevelopment可持续发展；environmentalist环保主义者；recycle再利用；jointeffort共同努力；raisepublic’sawarenessof..提高公众的…意识；shortage短缺；pollute/contaminate污染；poisonous/toxic有毒的；renewableresources可再生资源；non-renewableresources不可再生资源；biodiversity生物多样性；discharge/emission排放；globalwarming温室效应；ozone-layer臭氧层；non-biodegradablegarbage不可降解的垃圾

例句：
Unitedwecanstandagainstthethreatofecosystem,dividedwefalltodealwiththeformidablechallenge.

Governmentshouldsetupstrictandrelevantlaws,regulations,andpoliciestosecurethe(sustainabledevelopmentofmankind).Punishment,infinancialformorotherfeasiblemeans,shouldbeemployedasawarningtothepeopleandinstituteswhocommit(environmentthreatening/damagingbehaviors)

【全球变暖论据】(Globalwarming),causesdesertstoexpand,riverstodryup,droughtstointensifyandmeltingofthepolaricecapswhichmayleadtotheintrusionofsaltwaterintofreshwatersupplies.

例证：
Undertheeffectofglobalwarming,theicecaphaslost40%ofitsthicknessin40years.Itssurfaceareainthesummershrinksyearbyyear.Itcoulddisappearbefore2030.Somepredictionssuggest2015.

20%oftheworld’spopulationconsumes80%ofitsresources.

Theworldspends12timesmoreonmilitaryexpendituresthanonaidtodevelopingcountries.

5,000peopleadaydiebecauseofdirtydrinkingwater.

1billionpeoplehavenoaccesstosafedrinkingwater.

Nearly1billionpeoplearegoinghungry.

Over50%ofgraintradedaroundtheworldisusedforanimalfeedorbiofuels.

40%ofarablelandhassufferedlong-termdamage.

Everyyear,13millionhectaresofforestdisappear.

Onemammalinfour,onebirdineight,andoneamphibianinthreearethreatenedwithextinction.

Speciesaredyingoutatarhythm1,000timesfasterthanthenaturalrate.

3/4offishinggroundsareexhausted,depletedorindangerousdecline.

Theaveragetemperatureofthelast15yearshasbeenthehighesteverrecorded.

Theicecapis40%thinnerthan40yearsago.

Theremaybeatleast200millionclimaterefugeesby2050.

鼓励人们行动起来的例句：
Thecostofouractionishigh.Otherspaythepricewithouthavingbeenactivelyinvolved.Ihaveseenrefugeecampsasbigascities,spr