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What else can I help you with?
What ppm means in water pollution?
Parts per million.
What has been the historical carbon dioxide percentage of air over the past 10 000 years?
From 10 000 BC till 1860, the pre-Industrial Age, the carbon dioxide in air was approximately 278 ppm (0.0278%). In 1900 it was 295 ppm. In 1960 it was 315 ppm. In 1980 it was 335 ppm. In 1990 it was 350 ppm. In 2000 it was 369 ppm. In 2010 it was 388 ppm. In 2011 it was 392 ppm. (March 2011)
What percent of your air is polluted?
The question can be answered in two ways.How often are you in air that contains some pollution? Answer: Almost all of the time. It is only under extreme conditions that there is not some dust, hydrocarbon,solvvent or similar material in the air we breathe.What are the levels of pollution in the air? Answer: Air polution is usually measured in parts per million or parts per billion in the air. Maximum permitted concentrations can reach several hundred ppm for some compounds, e.g. Sulfur Dioxide.Aside: A ppm is about a thimbleful of gas in a cubic yard of air
Where is the most air pollution?
air pollution travels in the air
What is smoke density?
measures how many (usually) parts per million (ppm) of whatever smoke/gas/etc is being looked for. For instance a smoke detector looks for X ppm of smoke in air, or a CO2 sensor measures the ppm of CO2 in air - ppm is a measure of density.
Is there air pollution in the UK?
there's air pollution everywhere no matter where you go there's air pollution.
What is the meaning of water and air pollution?
water pollution: polluting water air pollution: polluting air
What is smoke density analyser?
measures how many (usually) parts per million (ppm) of whatever smoke/gas/etc is being looked for. For instance a smoke detector looks for X ppm of smoke in air, or a CO2 sensor measures the ppm of CO2 in air - ppm is a measure of density.
In dry air what is the concentration of nitrogen in ppm?
In dry air, the concentration of nitrogen is approximately 780,840 parts per million (ppm). This means that for every 1 million molecules of air, around 780,840 of them are nitrogen molecules.
Is there air pollution?
There are many types of air pollution. There can be particulate air pollution from things like dirt and pollen. There can be chemical air pollution from things like engines.
Which of the following is the best indicator of so2 pollution?
The best indicator of SO2 pollution is typically the concentration of SO2 in the air, measured in parts per million (ppm) or micrograms per cubic meter (µg/m3). Monitoring stations can measure this data to track levels of SO2 pollution in a specific area over time.
Is air pollution positive or negative?
Air pollution is negative
