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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.
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Contamination of the atmosphere by the introduction of pollutants from human and natural sources?
Deplet
The major anthropogenic sources of excess carbon dioxide in the atmosphere are?
the burning of fossil fuels
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
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
What two sources take CO2 out of the atmosphere?
The ocean removes carbon dioxide (CO2) from the atmosphere as part of the carbon cycle. This carbon recycles round and returns to the atmosphere again.Trees, forests and all growing vegetation remove CO2 from the atmosphere, release the oxygen, and store the carbon. If it is a long living tree, it can store that carbon for hundreds of years.
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.
Where are the sources for element helium?
Atmosphere
What are the probable sources of salt found in the atmosphere?
the ocean
What are the sources of lead?
Galena is the source
What cause will cause if lead to atmosphere?
depletion
What are some sources of water in the atmosphere?
Evaporation, Respiration, Transpiration.
What energy sources drives the atmosphere and hydrosphere?
Energy from the Sun.
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 is the total energy input into the atmosphere from all sources?
519 Watt/
What substance are thought to be main sources of chlorine radicals in the atmosphere?
methene
