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Until relatively recently, lead was added to petrol to raise its octane rating. After decades of cars emitting this into our atmosphere, scientists began to find high levels of lead in the air of our cities and along major traffic arteries. Even after lead is no longer added to fuel, the lead remains in our urban environment and re-enters the atmosphere when disturbed.
What else can I help you with?
What is the contamination of the atmosphere by the introduction of pollutants from human and natural sources?
like it is the matter of life circle
As water cycles through an ecosystem which process returns it to the atmosphere?
The process that returns water to the atmosphere in an ecosystem is evaporation. Water from sources such as lakes, rivers, and oceans is heated by the sun, turning it into water vapor that rises into the atmosphere.
What are the sources of cfc's in the atmosphere?
the source of cfc is mainly from refrigerators n ac's...increase in the emission of cfc may lead to a hole in the ozone layer,the result of which is harmful rays such as ultra violet rays reaching out to people which causes skin cancer
The major anthropogenic sources of excess carbon dioxide in the atmosphere are?
The major anthropogenic sources of excess carbon dioxide in the atmosphere are burning fossil fuels for electricity, transportation, and heating, as well as deforestation and land-use changes that release stored carbon into the atmosphere. These activities contribute to the increase in greenhouse gases, which leads to global warming and climate change.
What is the abundance of selenium in atmosphere of earth?
The abundance of selenium in the atmosphere of Earth is very low, with concentrations typically ranging from 0.1 to 1 nanograms per cubic meter of air. Selenium is not a major component of Earth's atmosphere and is mainly found in soil, water, and food sources.
What is the cause of lead in the atmosphere?
Lead in the atmosphere primarily originates from human activities, particularly the combustion of fossil fuels, industrial processes, and the use of leaded gasoline. Although the use of leaded gasoline has significantly declined since the 1970s, remnants from past emissions, industrial discharges, and mining activities continue to contribute to airborne lead. Natural sources, such as volcanic eruptions and dust storms, can also release lead, but their impact is minor compared to anthropogenic sources. The presence of lead in the atmosphere poses risks to human health and the environment.
What are the major sources of C in our atmosphere?
How long does co2 remain in the atmosphere
What are the sources of communication in the atmosphere?
Sattelites.
What are the probable sources of salt found in the atmosphere?
the ocean
What are the natural sources of methane and how do they contribute to the Earth's atmosphere?
Methane is naturally produced by sources like wetlands, oceans, and animals. These sources release methane into the atmosphere, where it acts as a greenhouse gas, trapping heat and contributing to global warming.
What are the sources of lead?
Galena is the source
What are some sources of water in the atmosphere?
Evaporation, Respiration, Transpiration.
What cause will cause if lead to atmosphere?
Lead in the atmosphere can be released through industrial processes, such as mining and smelting activities, as well as the burning of fossil fuels. Once in the atmosphere, lead can contribute to air pollution and pose risks to human health, particularly through inhalation or ingestion of lead particles. Long-term exposure to lead in the atmosphere can lead to various health issues, such as impaired brain function, kidney damage, and developmental problems in children.
Why should carbon stay the same in the atmosphere?
Carbon in the atmosphere is added by processes like combustion, decomposition and losses from methane sources. It is removed by photosynthesis and, chemical reaction and dissolving in ocean water. As long as the sources exceed the sinks the carbon will stay (and increase) in the atmosphere. Human activities increase the sources and decrease the sinks.
What are 2 sources of EM waves in earth's atmosphere?
the sun and technology
What are two sources of the gasses that produce acid precipitation?
The two main sources of gases that produce acid precipitation are sulfur dioxide (SO2) and nitrogen oxides (NOx). These gases are primarily released into the atmosphere from burning fossil fuels in vehicles, power plants, and industrial processes. When they react with water vapor and other pollutants in the atmosphere, they form sulfuric acid and nitric acid, which can lead to acid rain.
Which increase the amount of carbon dioxide in the atmosphere acting as a carbon sources?
Respiration :)
