conservation 保护，保存 (&223; conserve)v.s. conversationenvironmentalist = conservationistacid 酸  酸的 (＜＞alkali)acid raincarbon 碳 (c)  v.s. charcoal (炭)carbon dioxide, carbon monoxidefume exhaust fumesv.s. smoke, fog, smogpetroleum 石油&224; petrol (be) = gasoline/gas (ae)&224; unleaded petrol/gasozone 臭氧 (o + zone)ozone layerooze 渗出  渗出物radiation 辐射ultraviolet(uv) radiation~ radioactivegreenhouse 温室greenhouse effect/gasessolar 太阳的 (solar energy)^ lunar (lunar calendar)phenomenon 现象catastrophe = disaster, cataclysmdeterioration 恶化 (&223; deteriorate)extinction 灭绝 (&223; extinct)species endangered speciesdrought 干旱  (^ &8220;找它&8221;)＞＞＞ famine    v.s. floodingrecurrent 反复发生的re + (oc)cur + rentv.s. concurrentinundate 淹没    ^ &8220;淹掉它&8221;embankment 筑堤 (em + bank + ment)sediment 沉积（物）= depositdelta 三角洲the pearl river deltaalluvial 冲积的desertification &223; desert  (v.s. dessert)dust-storm 沙尘暴^ thunderstorm, brainstormbarren 贫瘠的，不育的，无效的dune sand dunethe game &8220;dune&8221;!attributable 归因于be attributable to&8230;deforestation 滥砍滥伐（森林）de + forest + ation＜＞ afforestation/reforestationlog 原木，日志  伐木v.s. logovegetation 植物，植被v.s. vegetable, vegetarianhabitat 栖息地&223; habit (habit is the second nature.)ecosystem 生态系统 (eco + system)~ ecologyviability &223; viable  &8220;vi&8221;: life养育能力one tool for assessing the impact of forestry on the ecosystem is population viability analysis.demographic 人口统计的  demo(people) + graph(write) + icinterdependence inter + dependencecounterbalance 使平衡，弥补 (=offset)counter(against) + balancemechanism 机理，机制precipitation 陡降，降水 (&223; precipice)＜＞ evaporationcirculation 流通，循环tide &224; tidal wave (海啸)＜＞ ebb    ＜＜＜ earthquaketyphoon ~ tornado, hurricanemeteorology 气象(学)volcano 火山eruption 喷发 (&223; erupt)volcanic eruption    ＞＞＞ lavagranite 花岗岩imminent = impending    v.s. eminentcelsius 摄氏的  37ocv.s. centigradefahrenheit 华氏的latitude 纬度(另) longitude, altitudetropical &223; (the) tropicstropical/torrid zone, temperate zone, frigid zoneglacier 冰川dump 倾倒，倾销&224; anti-dumpingcontaminate 弄脏  (&224; contaminant)recycle 回收再利用irreversible 不可逆的 (= irrevocable)reclaim 开垦，改造  &224; reclamationcontentious 有争议的 (&223; contend)many environmental issues today are highly contentious.opt 选择(+ for)    &224; optionprioritize 优先考虑 (&223; prior, priority)