Why do we have ozone depletion?

Answer 1

A "long" time ago, chemicals called fluorocarbons were blamed for depleting ozone in the upper atmosphere. Since the use of fluorocarbons has been greatly reduced, the ozone layer in the upper atmosphere has steadily been increasing, toward normal levels.

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Answer 2

Because factories produce harmful smoke. People spray harmful chemicals on crops and cars let off exhaust into the atmosphere and it depletes the ozone layer which also causes global warming, because the ozone layer also protects Earth from harmful UV rays.

Answer 3

Because we burn too much fossil fuels, run motors, use heating systems and lights etc. using energy depletes the ozone layer apparently!

Answer 4

Because of the release of gases like freons and other chlorofluorocarbons which reacted with ozone and broke it back down into oxygen.

Answer 5

Ozone holes have varied in size for as long as they have been monitored, which is not nearly enough time, given the history of the planet, to say that we do have "ozone depletion". However, there is much political & corporate gain to be made by saying the Earth is in peril.

Let me give you Mr Slim Whitman's answer to Nancy Pelosi, on very similar issue/non-issue:
Edited answer from Mr. Slim Whitman

Either "you" believe in Global Warming as the Gospel according the Hi Pope of ecomarxism (Al Gore) or you are a heretic and "hate" the planet.
Based on the number of negative votes I guess I am a heretic.
1st, I was an conservationist prior to the ecomarxist takeover of the environmental movement, I believe fully in conservation, and preservation within a degree of common sense economics. I am educated in natural resource issues. And believe common sense economics and conservation CAN exist together. The public and politicians are misguided and ill informed. It is not a crisis as "they" (Al Gore and his ilk) want you to believe. The earth is self healing an climate change is cyclical. For crying outloud!! People, quit Drinking the ecomarxist koolaid before you sell our Country out to UN bureaucrats!!!

The current ecomarxists, yourself included are attempting to create an environment of fear for one reason, Control. The "validity" of evidence based on 100 yr of temperature is amateurish at best. If you are to "address" the "climate change" issue don't think many people with knowledge of real climate science will sit idly by and let you and your ilk make stupid decisions for imposing law on our country. Common sense, 4.6 billion years of earths history contains records of warming and cooling, prior to man, and the miniscule of effect man may have on microclimate is virtually nothing of real concern. Can you say "Medieval Warming Period?" and Early Holocene? Perhaps have your staff research the topic with some objectivity instead of an agenda based on your personal quest for power and control.
http://www.oism.org/pproject/s33p36.htm....
http://www.junkscience.com
What amazes me is people are giving "negative" feedback for questioning this subject. Science requires scrutiny. Pseudoscience requires comtempt.

Additional reporting by Rebecca Bream
Media Shows Irrational Hysteria on Global Warming
"The Public Has Been Vastly Misinformed," NCPA's Deming Tells Senate Committee
12/6/2006 5:57:00 PM
To: National Desk
Contact: Sean Tuffnell of the National Center for Policy Analysis, 972-308-6481 or [e-mail]
WASHINGTON, Dec. 6 /U.S. Newswire/ -- David Deming, an associate professor at the University of Oklahoma and an adjunct scholar with the National Center for Policy Analysis (NCPA), testified this morning at a special hearing of the Senate Environment and Public Works Committee. The hearing examined climate change and the media. Bellow are excerpts from his prepared remarks.
"In 1995, I published a short paper in the academic journal Science. In that study, I reviewed how borehole temperature data recorded a warming of about one degree Celsius in North America over the last 100 to 150 years. The week the article appeared, I was contacted by a reporter for National Public Radio. He offered to interview me, but only if I would state that the warming was due to human activity. When I refused to do so, he hung up on me.
"I had another interesting experience around the time my paper in Science was published. I received an astonishing email from a major researcher in the area of climate change. He said, "We have to get rid of the Medieval Warm Period." "The Medieval Warm Period (MWP) was a time of unusually warm weather that began around 1000 AD and persisted until a cold period known as the "Little Ice Age" took hold in the 14th century. ... The existence of the MWP had been recognized in the scientific literature for decades. But now it was a major embarrassment to those maintaining that the 20th century warming was truly anomalous. It had to be "gotten rid of."
"In 1999, Michael Mann and his colleagues published a reconstruction of past temperature in which the MWP simply vanished. This unique estimate became known as the "hockey stick," because of the shape of the temperature graph. "Normally in science, when you have a novel result that appears to overturn previous work, you have to demonstrate why the earlier work was wrong. But the work of Mann and his colleagues was initially accepted uncritically, even though it contradicted the results of more than 100 previous studies. Other researchers have since reaffirmed that the Medieval Warm Period was both warm and global in its extent.
"There is an overwhelming bias today in the media regarding the issue of global warming. In the past two years, this bias has bloomed into an irrational hysteria. Every natural disaster that occurs is now linked with global warming, no matter how tenuous or impossible the connection. As a result, the public has become vastly misinformed."
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The NCPA is an internationally known nonprofit, nonpartisan research institute.

Answer 6

Because the stupid schools use textbooks that are 10 years old. It's replenishing.