就Climate & pollution 写一篇英语作文,120~150字就够了,

就Climate & pollution 写一篇英语作文,120~150字就够了,

Air pollution changes our planet’s climate,but not all types of air pollution have the same effect.There are many different types of air pollution.Some types cause global warming to speed up.Others cause global warming to slow down by creating a temporary cooling effect for a few days or weeks.Read on the learn more about the pollution that causes Earth to warm and the pollution that causes Earth to cool.
Some air pollutants cause more global warming
Air pollution includes greenhouse gases.One of these is carbon dioxide,a common part of the exhaust from cars and trucks.Greenhouse gases cause global warming by trapping heat from the Sun in the Earth’s atmosphere.Greenhouse gases are a natural part of Earth’s atmosphere,but in the last 150 years or so,the amount in our atmosphere has increased.The increase comes from car exhaust and pollutants released from smokestacks at factories and power plants.The increase in greenhouses gases is the cause of most of the global warming that happened over the past century.Scientists predict that much more warming will likely happen during the next century.
Some air pollutants slow down global warming
Cars,trucks,and smokestacks also release tiny particles into the atmosphere.These tiny particles are called aerosols.They can be made of different things such as mineral dust,sulfates,sea salt,or carbon.Some of these particles get into the atmosphere naturally.They are dust lifted into the atmosphere from deserts,from evaporating droplets from the ocean,released by the smoke from wildfires,and erupting volcanoes.But air pollution released by humans by burning of fossil fuels also adds them to the atmosphere.Aerosols have an impact on climate.While different types of aerosols act differently in the atmosphere,the overall effect of aerosols is cooling.
Greenhouse gases stay in the atmosphere for years and cause warming around the world.Computer models indicate that,worldwide,the tiny aerosols cause about half as much cooling as greenhouse gases cause warming.
还有一篇:
In its former incarnation,Climate Bill H.R.759,known as the Pollution-Climate Stewardship Act,held the primary intent of capping overall greenhouse gas (GHG) emission from covered sectors of U.S.industry starting in 2010 to the levels they were in 2000.
Climate Bill legislation is still in flux.There has even been talk of including a Climate Bill with cap and trade in the current budget reconciliation process in order to fast-track it.Given the large revenues that would be generated by selling carbon credits or emission permits it is difficult to see how the federal budget reconciliation process could be concluded without considering the effects of a Climate Bill.But,it has been argued that the budget process was not designed for the formation of such substantive legislation.Climate Reserve Funds have been allocated as a kind of financial placeholder to make room for some form of a Climate Bill down the road as a way to work around the absence of a final bill at this time.
觉得不灵 就自己写吧,把课文或课后阅读理解修改下就变自己的文章了,