Q1: What are the primary sources of air pollution? A1: English: The primary sources of air pollution include vehicle emissions, industrial processes, power plants, and natural sources such as wil...
[听力原文] 24-29 How much can you say about air pollutant At first let’s have a look at a useful definition of it. A pollutant is a compound added directly or indirectly by humans to the atmosphere, and in such quantities to adversely affect humans, animals, vegetations or materials. ...
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 pollutant is a chemical added directely to the air ...
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Secondary pollutants:When pollutants in the air mix up in a chemical reaction, they form an even more dangerous chemical. Photochemical smog is an example of this and is a secondary pollutant. Why is air pollution such an important issue today?Click to find out ...
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 pollutant is a chemical added directely to the air ...
题目问:说话者认为将来什么可能是空气污染物文章的第一段指出“In the future even water vapor might be thought of as an air pollutant under certain conditions”,也就是说,水蒸气现在并不是大气污染物,将来可能成为污染物。其他几项均为干扰项,因为它们现在已经是污染物了,因此我们可以得出选项D为正确答案。
What is the difference between photosystems one and two? Air pollutants can be classified as either primary or secondary pollutants. 1. What is the difference between these types of pollutants? 2. Provide at least two examples of each type of pollutant. ...
air pollution is defined as the presence of substances in the atmosphere that have a harmful effect on human health as well as the health of other living organisms. water pollution is defined as the contamination of bodies of water usually as a result of human activities. explore more about ...
Secondary pollutant is ASO2 BCO CDDT DPANSubmit Given below are some differences between primary air pollutants and secondary air pollutants. Which one of the following is an incorrect difference ? A Primary air pollutantsSecondary sir pollutantsThese persist in the form in which they are added ...