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Which of the following is not a way in which humans directly impact algal bloom production? a. industrial pollution b. wastewater discharge c. fertilizer in aquatic ecosystems d. fishing
d. fishing
Expert answered|ashasri|Points 30|
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Asked 4/25/2013 11:59:25 AM
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The troposphere contains 90% of the ozone in the atmosphere. True or False?
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Updated 5/28/2014 2:05:48 AM
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FALSE.The troposphere contains 90% of the ozone in the atmosphere.
Added 5/28/2014 2:05:48 AM
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The best method to improve air quality is to _______. a. use technology to reduce the pollutants in air b. produce less pollution c. produce less pollution and use technology to reduce the pollutants in air d. better utilize land and technology to prevent pollution
Weegy: d. [ better utilize land and technology to prevent pollution There are many different kinds of pollutants, but some of the more larger problems result from: Greenhouse gases - Carbon dioxide and methane are two of the most important of these gases, [ called greenhouse gases because they trap heat in the earth's atmosphere. This is already causing severe problems around the world and the situation will only get worse. The rising temperatures will likely lead to more severe weather events, cause shifts in natural communities, and probably lead to greater species extinction rates, among numerous other effects. Heavy metals - Most heavy metals, such as mercury, are a natural part of the earth's crust, and would be slowly released into the environment over time anyway, just from weathering of soils and rocks. However, our consumption of fossil fuels has greatly increased the introduction of heavy metals into our environment. ] ] (More)
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