MelissaPoewas9yearsoldwhenshebeganacampaignforacleanere...
问题详情：MelissaPoewas9yearsoldwhenshebeganacampaignforacleanerenvironmentbywritingalettertothethenPresidentBush.Throughheronefforts,herletterwasreproducedonover250donatedbillboards(广告牌)acrossthecou...