1、Environmental ProtectionEnvironment is the things around the center of thingsThe law of Environmental ProtectionEnvironment is :air, water, land, minerals, forests grasslands, wildlife (野生動植物) aquatic flora and fauna(水生動植物) historical sites, scenic areas nature reserves, residential areasWhat is hap

2、pening on the earth every second 2.4 Neonates born in the world. extracted 28.6 tons of metal. produce 1.3 cars. CO2 emissions of 760 tons worldwide. Decrease of 0.6 square kilometers forest.The worlds top ten environmental problems 1.Global warming-全球變暖全球變暖 2.Ozone layer depletion-臭氧層破壞臭氧層破壞 3.Loss

3、 of biodiversity-生物多樣性減少生物多樣性減少 4.The spread of acid rain-酸雨蔓延酸雨蔓延 5.Forest dropped-森林銳減森林銳減 6.Desertification-土地荒漠化土地荒漠化 7.Air pollution-大氣污染大氣污染 8.Water pollution-水體污染水體污染 9.Marine pollution-海洋污染海洋污染 10.Cross-boundary movements ofpoisonous wastes-毒性廢棄物越境轉移毒性廢棄物越境轉移NO.1 Global warming Gradually inc

4、reasing the greenhouse effect, Earths temperature rising. Main hazards( (危害危害) ):abnormal weather, species extinction, the sea level rising. Ozone (O3) layer: the Earths protective layer Main hazards: strong UV (ultra-violet ray紫外線紫外線) radiation can damage immune system（免疫系統）（免疫系統） of human natures

5、and animals , cause skin cancer and cataracts（白內障）（白內障）, damage to the earths ecosystems（全球生態系統）（全球生態系統）. .NO.2 Ozone layer depletion NO.3 Loss of biodiversity NO.4 The spread of acid rain Global extinction of 50,000 species / year,140 / day on average. pH 5.6 referred as acid rain. Main hazards:Wat

6、er and soil acidification( (酸化酸化) ), , plant and animal death, corrosion( (腐蝕腐蝕) ) buildings, railways and bridges and other facilities.NO.5 Forest dropped NO.6 Desertification Huge numbers of global deforestation. 600 million square kilometers of land into desert each year.NO.7 Air pollution Sulfid

7、e and nitrogen oxides( (硫化物和氮氧化合物硫化物和氮氧化合物) ) into the atmosphere worldwide up to 30 million tons each year.NO.8 Water pollution About 40% of the worlds rivers are seriously polluted. Freshwater（淡水）（淡水）resources are becoming exhausted.NO.9 Marine pollution NO.10 Cross-boundary movements of poisonous wastes Hundreds of tons of silt and wast