Choose the correct option _______ and ______ are the examples of primary pollutants

Step 1/2 Acid deposition is caused by the release of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere, which then react with water, oxygen, and other chemicals to form acidic compounds. a. Volatile organic compounds (VOCs) are not primary pollutants that cause acid deposition. b. Sulfur dioxide (SO2) is a primary pollutant that causes acid deposition. c. Methane (CH4) is a greenhouse gas but not a primary pollutant that causes acid deposition.

• Primary air pollutants: Pollutants that are formed and emitted directly from particular sources. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide. • Secondary air pollutants: Pollutants that are formed in the lower atmosphere by chemical reactions. The two examples are ozone and secondary organic aerosol (haze). • Secondary pollutants are harder to control because they have different ways of synthesizing and the formation are not well understood. They form naturally in the environment and cause problems like photochemical smog. Sources of PM • PM 2.5 (also known as fine fraction particles) is generally defined as those particles with an aerodynamic diameter of 2.5 microns or less. Sources of fine particles include all types of combustion activities (motor vehicles, power plants, wood burning, etc.) and certain industrial processes. • PM 10-2.5(also known as coarse fraction particles) is generally defined as those particles with an aerodynamic diameter greater than 2.5 microns, but equal to or less than a nominal 10 microns. Sources of coarse particles include crushing or grinding operations, and dust from paved or unpaved roads. • Other PM may be formed in the air from the chemical change of gases. They are indirectly formed when gases from burning fuels react with sunlight and water vapor. The sources can be from fuel combustion in motor vehicles, at power plants, and in other industrial processes.

More • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Air Pollution Questions Air pollution is the poisoning of air caused by the presence of compounds in the atmosphere that are hazardous to human and other living beings’ health, as well as to the environment and materials. Gases (like ammonia, carbon monoxide, sulphur dioxide, nitrous oxides, methane, carbon dioxide, and chlorofluorocarbons), particles (including organic and inorganic), and living molecules are all examples of air pollution. Many pollution-related disorders, including respiratory infections, heart disease, COPD, stroke, and lung cancer, are all linked to air pollution. Definition: Air pollution is described as introducing pollutants, organic molecules, or other unsafe materials into Earth’s atmosphere. This can take the form of excess gases like carb...

Many other sources, including automobiles, coal-fired energy plants, natural gas-fired power plants, biofuel burning, open burning, volcanoes, and many others, can produce primary pollutants. Humans, animals, and plants are all at risk from the impacts of primary pollutants, which can be hazardous to all three. In addition, their contribution to the development of secondary pollutants is alarming, as this is what results in the formation of dangerous ground-level ozone, as well as numerous types of smog, particularly in densely populated places such as Los Angeles. The reduction in primary pollutant emissions has been significant in recent years, thanks to tighter laws, technological advancements, and economic shifts. Primary Pollutants Primary pollutants are substances that produce pollution levels in the state in which they have been discharged at the source and are therefore considered to be harmful to human health and the environment. The chemical reactions that occur between certain primary pollutants and some other elements or compounds produce new substances, which are referred to as secondary pollutants. Primary pollutants pollute the environment because they are released directly into the ecosystem. It is possible that the substance discharged was previously present in certain amounts, but it is deemed the main pollutant if the extra release increases the overall physical quantity to levels that are considered harmful to human health. Examples of Primary Pollutant...