You have new items in your feed. Click to view.
Question and answer
5 recommendations on how to address environmental problem (air pollution)
Smog hanging over cities is the most familiar and obvious form of air pollution. But there are different kinds of pollution—some visible, some invisible—that contribute to global warming. [ Generally any substance that people introduce into the atmosphere that has damaging effects on living things and the environment is considered air pollution. Carbon dioxide, a greenhouse gas, is the main
pollutant that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas. In the past 150 years, such activities have pumped enough carbon dioxide into the atmosphere to raise its levels higher than they have been for hundreds of thousands of years. Other greenhouse gases include methane—which comes from such sources as swamps and gas emitted by livestock—and chlorofluorocarbons (CFCs), which were used in refrigerants and aerosol propellants until they were banned because of their deteriorating effect on Earth's ozone layer. Another pollutant associated with climate change is sulfur dioxide, a component of smog. Sulfur dioxide and closely related chemicals are known primarily as a cause of acid rain. But they also reflect light when released in the atmosphere, which keeps sunlight out and causes Earth to cool. Volcanic eruptions can spew massive amounts of sulfur dioxide into the atmosphere, sometimes causing cooling that lasts for years. In fact, volcanoes used to be the main source of atmospheric sulfur dioxide; today people are. Industrialized countries have worked to reduce levels of sulfur dioxide, smog, and smoke in order to improve people's health. But a result, not predicted until recently, is that the lower sulfur dioxide levels may actually make global warming worse. Just as sulfur dioxide from volcanoes can cool the planet by blocking sunlight, cutting the amount of the compound in the atmosphere lets more sunlight through, warming the Earth. ]
Expert answered|megumiii|Points 0|
Asked 5/12/2012 7:20:45 AM
0 Answers/Comments
Get an answer
New answers

There are no new answers.


There are no comments.

Add an answer or comment
Log in or sign up first.
26,585,826 questions answered
Popular Conversations
What does the term "suffrage" mean? A. great suffering B. the ...
Weegy: The right of people to gather for whatever nonthreatening purpose they desire is: peaceful assembly. User: ...
12/6/2016 6:37:32 AM| 2 Answers
20 for $1.56
Weegy: 20+56= 76 User: $3.78 for 6
12/6/2016 7:28:29 AM| 2 Answers
What is believed to be one of the main reasons Secretary of State ...
Weegy: D. encourage foreigners to immigrate to the United States. User: For most of the 19th century, which nation ...
12/6/2016 9:45:21 AM| 2 Answers
The Presidential campaign for Calvin Coolidge was led by ___.
Weegy: The Presidential campaign for Calvin Coolidge was led by Charles Dawes. User: The philosophy that Western ...
12/6/2016 9:48:48 AM| 2 Answers
Weegy Stuff
Points 178 [Total 450] Ratings 1 Comments 168 Invitations 0 Offline
Points 67 [Total 67] Ratings 0 Comments 67 Invitations 0 Offline
Points 61 [Total 493] Ratings 0 Comments 61 Invitations 0 Offline
Points 43 [Total 722] Ratings 0 Comments 43 Invitations 0 Offline
Points 21 [Total 43] Ratings 0 Comments 11 Invitations 1 Offline
Points 17 [Total 17] Ratings 0 Comments 17 Invitations 0 Offline
Points 16 [Total 292] Ratings 0 Comments 16 Invitations 0 Offline
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
Points 8 [Total 8] Ratings 0 Comments 8 Invitations 0 Offline
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.