解析 A 正确答案:A解析:由but表明前后是转折关系,即存在着对比。but之前的地点状语是at ground level,因而but之后用in the stratosphere,无论从结构上还是形式上均与at ground level对称。选A是正确的,B、D使but分句的句子结构不完整。E改变句意,而C与but之前的形式缺乏对应关系,表达啰嗦。 知识模块:语法改错...
A6 Ozone is considered a pollutant at ground level but is important in the stratosphere.(a) Explain why the ozone layer is important to us..[1] (b) Explain why ozone is considered as a pollutant at ground level.[1] 相关知识点:
Stratospheric Ozone:** Ground-level ozone and stratospheric ozone are not the same. Ground-level ozone is a harmful pollutant formed when pollutants emitted by vehicles, industrial facilities, and other sources react in the presence of sunlight. It is a major component of smog ...
Ground-level ozone. Particle pollution (also known as particulate matter). Carbon monoxide. Sulfur dioxide. Nitrogen dioxide. A sixth air pollutant that is monitored by the EPA is lead, but that is not included in the daily air quality reports. According to an EPA spokesperson, that’s becaus...
Is the ozone layer good or bad? How does chlorine affect the ozone layer? How is ground-level ozone different from stratospheric ozone? How does hairspray affect the ozone layer? Why is the ozone layer in the stratosphere? Does pollution affect the ozone layer?
What Actions Have Been Taken to Reduce the Amount of Ozone at Ground Level? Ozone pollution at the earth's surface is formed within the atmosphere by the interaction of sunlight with chemical precursor compounds (or starting ingredients): the nitrogen oxides (NOx) and volatile organic compounds ...
System (JPSS)also collects information about particles in our air. These include smoke particles from wildfires, airborne dust during dust and sand storms, urban and industrial pollution andash from erupting volcanoes, NOAA said. The JPSS series of satellites can also measure ground-level ozone. ...
Methane also contributes to the formation of ground-level ozone, a gas that is harmful to humans, ecosystems and crops, according to the Global Methane Assessment. What would the impact of reducing methane emissions look like? According to the Global Methane Assessment, cutting 45% of human acti...
These compounds lead to the production of ground-level ozone (O3), an air pollutant that damages human health, plants, and materials, reduces crop productivity, and has effects on the Earth's climate. Our measurements show that, at present, O3 concentrations do not differ significantly over ...
AQI value indicates a greater level of air pollution and a greater health concern.The five major pollutants include:ground-level ozoneparticle pollution(also known as particulate matter, including PM2.5 and PM10)carbon monoxidesulfur dioxidenitrogen dioxideWhat is good air quality and what i...