1-4~1.6

organism生物pollutant污染物identifiable可識別的smokestack煙囪plant工廠drainpipe排水管exhaust pipe汽車排氣管automobile汽車disperse被驅散的pesticide殺蟲劑blown吹fertilizer肥料disrupt分裂life-support systems生命維持系統nuisance麻煩mill工廠dilute降低consumption消費corresponding符合catalytic converters觸媒轉化器toxic有毒的seepage滲流buried掩埋point sources點來源shrinking縮短rangeland牧場unsustainable無法支撐的prematurely貿然地malnutrition營養失調sanitation環境衛生facilities設施inhaling吸入tractor-trailer牽引式掛車life-threatening致命的infectious有感染力的subsidies補助金technologies工藝技術stewardship管理工作cooperation合作livable適於居住的innovative創新的blighted毀壞reliance信賴biodiversity生物多樣性astounding令人驚奇的