why is the difference between primary and secondary pollutants?
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A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
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Effects are often classified as primary and secondary impacts. Primary effects occur as a direct result of the ground shaking, eg buildings collapsing. Secondary effects occur as a result of the primary effects, eg tsunamis or fires due to ruptured gas mains.
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The main advantages are as follows : A secondary cell is rechargeable meaning that the chemical reactions taking place in the cell are reversible and can be carried out in the opposite direction to charge the cell again. Whereas a primary cell cannot be recharged, the chemical reactions in it cannot be reversed.
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The main difference is the way each respective treatment is processed. Primary treatment works on sedimentation, where solids separate from the water through several different tanks. In contrast, secondary treatment uses aeration, biofiltration and the interaction of waste throughout its process.
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Secondary pollutants include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight. NO2, which is formed when NO combines with oxygen in the air.
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water pollution is a more general term, covering all natural waters such as rivers, lakes, groundwater, seas and oceans. Marine pollution covers only pollution in seas and oceans. ... Industrial effluents are more common in fresh water pollution while the major cause of marine life pollution is oil spills.
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What is the difference between the primary market and the secondary market? The primary market is the market where a security is sold when it is first issued and sold to investors. ... The secondary market is the market where subsequent trading takes place and individual investors trade among themselves.
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What's the Difference? Water purification removes more toxins and pollutants from the water than water filtration can. Purification can remove smaller pollutants because it relies on a more comprehensive process than simply having water pass on its own through a porous surface.
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Answer and Explanation: The difference between point and nonpoint source pollution is that point source pollution has a single, identifiable source while nonpoint source...
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Air pollution is a mixture of solid particles and gases in the air. ... Whereas, Water pollution occurs when harmful substances—often chemicals or microorganisms—contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment.
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Primary standards provide public health protection, including protecting the health of "sensitive" populations such as asthmatics, children, and the elderly. Secondary standards provide public welfare protection, including protection against decreased visibility and damage to animals, crops, vegetation, and buildings.
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Primary pollutants are emitted directly from a source, such as emissions of sulfur dioxide from coal combustion. ... Photochemical smog, as found for example in Los Angeles, is a type of air pollution derived from vehicular emission from internal combustion engines and industrial fumes.
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Differences between Primary and Secondary Immune Response. The primary immune response occurs when an antigen comes in contact to the immune system for the first time. ... The secondary immune response occurs when the second time (3rd, 4th, etc.) the person is exposed to the same antigen.
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Thus, water pollution is all about quantities: how much of a polluting substance is released and how big a volume of water it is released into. A small quantity of a toxic chemical may have little impact if it is spilled into the ocean from a ship.
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Key Differences Between Primary Succession and Secondary Succession. ... Primary Succession occurs in the lifeless or barren area while Secondary Succession occurs in an area, which has been recently got deprive of life and was previously inhabited.
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A primary metabolite is a kind of metabolite that is directly involved in normal growth, development, and reproduction. ... Conversely, a secondary metabolite is not directly involved in those processes, but usually has an important ecological function (i.e. a relational function).
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Primary waves travel faster, move in a push-pull pattern, travel through solids, liquids and gases, and cause less damage due to their smaller size. Secondary waves travel slower, move in an up-and-down pattern, travel only through solids, and cause more damage due to their greater size.