2007-07-20 06:40:43 · 23 answers · asked by Anonymous in Environment ➔ Global Warming
Global warming is one-half of the climatic cycle of warming and cooling.
The earth's mean temperature cycles around the freezing point of water.
This is a completely natural phenomenon which has been going on since there has been water on this planet. It is driven by the sun.
Our planet is currently emerging from a 'mini ice age', so is becoming warmer and may return to the point at which Greenland is again usable as farmland (as it has been in recorded history).
As the polar ice caps decrease, the amount of fresh water mixing with oceanic water will slow and perhaps stop the thermohaline cycle (the oceanic heat 'conveyor' which, among other things, keeps the U.S. east coast warm).
When this cycle slows/stops, the planet will cool again and begin to enter another ice age.
It's been happening for millions of years.
Humans did not cause it.
Humans cannot stop it.
2007-07-20 06:59:21 · answer #1 · answered by credo quia est absurdum 7 · 3⤊ 1⤋
Global warming is an overall increase in the world's temperature due to a change in the composition of our atmosphere.
Why is it changing? Our cars, industrial methods, and even some of our agricultural practices result in more CO2 as well as other gasses (such as methane) in the air. The problem is that, like a few people mentioned above, these gasses trap heat from the sun very efficiently and thus warm the air and the earth.
It's not a controversial idea at all: even my 3rd grade science textbook (I'm in my 20's now) confirms that CO2 acts like the earth's "warm blanket" by trapping heat from the sun, and the planet would be a lot colder without it. The problem is that now, our "warm blanket" is getting too thick!
Anyway, over the last 20 years, thousands upon thousands of scientists have worked with the United Nations to determine exactly how much warming has happened and why. As of April 2007, they are at the highest level of scientific certainty that:
a) the earth has warmed at least 1.1 degrees in the last 100 years (doesn't sound like a lot, but the avg temp of the earth during the last ICE AGE was only 3-9 degrees colder than now!)
b) this warming is caused by all the CO2 and other greenhouse gasses that human activity has produced.
Go to the Intergovernmental Panel on Climate Change for more details.
http://www.ipcc.ch/
2007-07-20 08:26:38 · answer #2 · answered by Anonymous · 0⤊ 3⤋
Global warming is an average increase in global temperatures. It has natural and man-made (anthropogenic) components.
Climate change is when the climate changes in either direction - hotter, or colder.
Those who believe in anthropogenic global warming say that human activities are a (big) part of the cause of the warming.
2007-07-20 06:49:50 · answer #3 · answered by Anders 4 · 1⤊ 1⤋
● Global Warming: Global warming is the process by which the world heats up; there are two key components – natural and manmade.
● Natural Global Warming: The earth goes through cycles spanning many thousands of years in which there is warming and cooling. Other natural factors such as the sun affect the temperature on Earth.
● Anthropogenic Global Warming: Anthropogenic (or manmade) global warming is the effect human activities have on the warming of the earth.
2007-07-20 06:52:36 · answer #4 · answered by Trevor 7 · 4⤊ 2⤋
We being meat eaters, should start eating more fruits & vegetables like we are meant to.
The one single reason is cattle and the dung they produce, before you laugh and disregard this answer, it is a scientific fact, are the main source of the substance, CO2? that help to cause Global warming.
Stop sending airships into space, find alternative fuel for motor vehicles and commercial Aircrafts.
Recycle much more than we do now.
2007-07-21 01:57:17 · answer #5 · answered by sidestepper11 5 · 0⤊ 1⤋
Hello there and how are you today?
Global warming,
A lot of emviermentalists like to say it is the cause of polution from factories, cars, buses, and airasal can use.
But in acuality it is just a natural life cycel, like for instence about every 10,000 years there is an iceage, not always real bad but it is still concidered an iceage.
Global warming is the natural way for our planet earth to go through one of its warming trends, then shortly after words there will be another iceage, after all we are about due for another one.
But don't get to worried about it cause this can take over several hundred years to do so.
If you've watched the news you would here how the north polar capes are melting very fast, well this in turn causes the sea levels to rise, witch in turn will cause more sever storms to come about, this is all happening while our temps continue to rise over the years.
Then the temps will start to drop very fast,by about 10'F every year, till we have the next iceage.
In other words it is a way for mother earth to heal herself from all the popalution, and allow time for the cleansing process.
Have you ever seen the movie, The Day After Tomorow?
Well that movie hit it rite on the head of what are planet will go through naturly, but of course it happens much to fast to be real.
I hope this helped you in understanding our planet a little better, get the DVD on this movie, after the movie you can listen to what they say about it.
2007-07-20 07:20:15 · answer #6 · answered by Anonymous · 2⤊ 2⤋
its really not hard type global warming into a serach engine look at what the websites tell you
The guys who tell you that it not happening and its all a natural cycle are the same type of people who had Galileo locked up for suggesting the earth was going round the sun instead of the other way round.
Ask them what evidence that have that the current warming cycle is cause by natural events and they will have none. The linkage between human co2 production and increasing temperatures on the other hand has been well researched and documented.
But there you go some people are not going to accept it because it may inconvenience they and they may have to get off their fat back sides and do some exercise to get places or buy a smaller car.
Try some of these as place to start and find evidence
http://www.royalsoc.ac.uk/landing.asp?id=1278&gclid=CJ3ss97Zto0CFQ6IlAodwlufEw
http://www.ecobridge.org/content/g_evd.htm
This will give you a simple explanation of what it is
http://www.bbc.co.uk/climate/evidence/greenhouse_effect_img.shtml
2007-07-20 06:45:18 · answer #7 · answered by jack 1 · 1⤊ 4⤋
Global warming is an event where the season becomes hotter and it is caused by the ozone layer breaking
2007-07-22 02:33:27 · answer #8 · answered by cpt. siopao 1 · 0⤊ 1⤋
The carbondioxide and other gases that we produce due to our actions (driving cars, manufacturing industries pollutants, etc..) form a layer above the earth. This cloud traps the heat from the sun and it raises our environment's temperature. Even a rise of 1 to 1.5 degrees is enough to cause a lot of damage to our environment such as flooding due to polar ice caps melting. In otherwords, we cause so much damage to ourselves.
It is the same principle of trapping heat that we all use to grow plants in green houses during winter. Hence, the term 'greenhouse effect'. It is an alternate way of saying global warming.
2007-07-20 06:55:29 · answer #9 · answered by Nightrider 7 · 1⤊ 3⤋
It means when the temperature of the Earth warms up
Like it has done countless times in the past. It also has been known to cool down on occasions too! ALL without the help of Carbon emmissions
2007-07-20 06:44:04 · answer #10 · answered by Anonymous · 7⤊ 1⤋