单词	ozone layer
释义	ozone layerˈozone ˌlayer noun [singular] Examples EXAMPLES FROM THE CORPUS But because of their longevity they are expected to go on damaging the ozone layer for decades. Since 1989 I have measured the ozone layer, solar ultraviolet and the clarity of the air over South-Central Texas. Suppose pollution beyond a certain critical level would have disastrous social consequences, for example irreversibly damaging the ozone layer above the earth. The remainder have escaped into the atmosphere to cause further depletion of the ozone layer. There will be displays on acid rain, the ozone layer and global warming. This was seen as essential if such countries were to co-operate in efforts to protect the ozone layer. Thesaurus Longman Language Activatordamage to the environment► pollution harmful chemicals, gases, or waste materials from factories, houses etc that enter the air, water, or land and kill or damage the things that live or grow there: · Pollution levels in the area shot up as soon as the factory started operating.· What pollution controls will the state authorities put in place?air/marine/land etc pollution: · She says that transporting goods by rail instead of road would cut air pollution dramatically. ► global warming a general increase in the temperature of the world caused by harmful chemicals and gases from cars, factories etc entering the air: · Scientists estimate that global warming could cause a six degree rise in temperatures by 2100.· One of the most devastating consequences of global warming could be the melting of the polar ice caps. ► greenhouse gases gases from cars, factories, machines etc that form a layer around the earth and keep the heat in. These are a cause of global warming: · International controls are needed to reduce emissions of greenhouse gases.· Western countries are overwhelmingly responsible for current levels of greenhouse gases. ► acid rain rain that is harmful to trees and buildings because it contains pollution from factories, power stations etc: · Typical symptoms of acid rain include deformed and dying trees, and trees with vastly reduced numbers of leaves. ► climate change changes in the weather across large areas of the world caused by damage to the natural environment, for example increases in temperature, more storms, or more or less rain: · People will have to get used to more flooding and droughts as climate change becomes a reality.· an international conference on Climate Change ► hole in the ozone layer a hole in the layer of natural gases around the earth that protects people, animals etc from damage from the sun. This is thought to be caused by harmful gases from cars, household products, factories etc entering the earth's atmosphere: · The increase in the incidence of skin cancer is directly due to the hole in the ozone layer. ► deforestation when too many trees are cut down in an area, so that the environment is badly damaged: · Some parts of tropical America have seen over 70% deforestation.· The land is severely eroded as a result of widespread deforestation and intensive farming. ► endangered species a type of animal, plant etc that might soon stop existing because of damage to the environment it lives in or because too many of them have been killed by humans: · Environmentalists say that the area includes the habitats of at least 20 endangered species.· Although the tiger is an endangered species, it is still hunted in some areas. WORD SETS► Earth Sciences avalanche, nounaxis, nouncatchment area, nouncrater, noundinosaur, noundivide, nounelement, nounextinct, adjectivegallery, noungeo-, prefixgeophysics, nounglacial, adjectiveglaciation, noungoldfield, nounlandslide, nounlandslip, nounleach, verbmagnetic pole, nounmagnitude, nounmantle, nounmeteorite, nounmolten, adjectivemother lode, nounnatural history, nounonyx, nounopal, nounozone layer, nounpaleontology, nounpitchblende, nounPleistocene, adjectivePliocene, adjectiveprimeval, adjectivequake, verbquake, nounrarefied, adjectiverock, verbscour, verbshock wave, nounslide, nounsoapstone, nounstony, adjectivestream, nounstrip mine, nounsubcontinent, nounsubterranean, adjectivesuperficial, adjectiveterrain, nounterrestrial, adjectivetremor, nounundercurrent, nounvolcanic, adjectivevolcano, nounvortex, nounwater table, noun a layer of gases in the sky that prevents harmful radiation from the sun from reaching the Earth:  the hole in the ozone layer
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