shaoxl2013
OceanMWhenthepesticideswentintothemarineecosystem，Onceinthefoodwebs，thesepesticidescancausemutations，aswellasdiseases，City•About60percentofcitiesarepollutedinCTAExhaustfumes，So，don’tspitting，don’tlitter，don’tgraffitionthewall!ForestTAcidrain，bigfireandsawsalwaysbreaktheforestsunfeelingly，so，TLet’splanttreesandprotecttheforeststogether!RiverTherearemanythingsintheriver，likenewspaper，oil，Ifwedrinkthewaterthat’sfromthepollutedriver，ASo，don’tsewageeffluentintotheriver! 
