There are two types of pollutants: Primary pollutantsare those gases or particles that are pumped into the air to make it unclean. They include carbon monoxide from automobile (cars) exhausts and sulfur dioxide from the combustion of coal. Secondary pollutants:When pollutants in the air mix up ...
1 英语翻译 Text:Type and Sources of Air Pollutants What Is Air Pollution?Air pollution is normally defined an air that contains one or more chemicals in high enough concentrations to harm humans,other animals,vegentation or materials.There are two major types of air pollutants.A primary air pol...
Air pollution is defined as a mixture of gases and particles that have been emitted into the atmosphere by human-made processes. There are a range of pollutants as shown below. The combustion of fossil and carbon based fuels such as coal, oil, gas, petrol/diesel and wood burning are the ...
In my humble opinion,I think the air from a varities of factory and buses is air pollution.
According to the speaker, what is the feature of air pollutants A. Its contents often remain stable.B. Its definition will change over time.C. Air pollutants are natural.D. Air pollutants are man-mad 相关知识点: 试题来源: 解析 B [解析] 本题为细节题,考查考生抓住文章中所谈到的重要细节...
Air pollution is one type of pollution Pollution refers to the presence ofsubstances in the environment that are harmful or toxic. Toxic means poisonous. The substances, which we refer to as ‘pollutants,’ may be harmful to human health. May may also be harmful to other animals as well as...
have recently gained recognition as pollutants by some scientists. Others recognize the gas as being essential to life and therefore incapable of being classed as a pollutant.参考:Air pollution is a chemical physical (e.g. particulate matter)or biological agent that modifies the natural ...
What is air? It has no colour, smell or taste. We can feel it. When it moves, it becomes wind. Air is important to the world. People need it. Animals need it. Plants need it too. So we must keep the air clean and fresh. Don't smoke. Don't drive to school or work if you...
James Ryalls and his team at the University of Reading,UK reported their new findings.Their study found that air pollution can influence(影响) pollinators(传花粉者) - insects like bees and butterflies. Pollinators are important.They spread pollen(花粉) among plants with ...
根据“Their study found that air pollution is harmful to pollinators(传花粉者)—insects like bees and butterflies. They can’t smell flowers because of the pollution.”他们的研究发现,空气污染对传粉昆虫有害——像是蜜蜂和蝴蝶。由于污染,他们闻不到花香。可知由于空气污染,它们会闻不到花香。故选C。