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inganimportantscientificfieldandisdrawingagreaterattention.itinvolvestheworkagainstwater(air)pollution,desertexpansion,soilerosion,garbage(esp.plasticwaste),acidrainandsoon.tosolvetheaboveproblems,muchknowledgeandresearchworkisneeded.scientistsaswellasmonpeopleattachprimaryimportancetoenvironmentalprotection.
withoutenvironmentalprotection,humanbeingswouldnotlastlong.iftherewereseriousdesertexpansionandsoilerosion,wewouldhavenolandtofarmandnofoodtoeat.iftherewerepollutedair,water,wewouldget(sufferfrom)diseasesandbeeweak.iftherewereendlesshuntingofanimals,wewouldkillhumanbeingsourselvesintheend.itisadutyforeachpersonontheearthtoprotecthisenvironment.livingsurroundingsaresosignificantforusthateveryoneshouldpayattention;nolitteringandnospittingeverywhere,etc.