The answer to your question is both.
Man made:
~exhaust fumes from cars, factories
~aerosols
~CFCs
Nature
~clouds
~volcanic eruptions
yeah, so nature is actually suffering a lot already, and then man comes in to add fuel to the fire.
2006-06-19 21:06:09
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answer #1
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answered by smashingly.smashing 4
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It is most likely both. Everyone knows that greenhouse gases cause the greenhouse effect of warming the atmosphere etc. And we also know that we are putting a lot of greenhouse gases into the atmosphere. But I doubt man is the only thing that is affecting it.
Of course a lot of animals fart etc releasing methane (another greenhouse gas) into the atmosphere. And volcanoes spew out greenhouse gases too. Aswell as some plants contributing. however a bit of a greenhouse effect is important otherwise we would not be alive due to an extremely cold atmosphere.
The above reasons for a natural event have been happening for ages and does not explain the sudden rise, but there could be another natural event too. The sun fluctuates in temperature over a 11-12 year period. At the beginning of the period the sun is colder than average, and then slowly becomes hotter towards the end of the period before suddenly becoming cold again at the start of the next period. This is due to Sun spots on its surface that cause the sun to be cooler. Sun spots do occur periodically. We are currently at the end of one of these periods so we are experiencing hotter climes.
It is also thought that the Sun has times when these periods are hotter than usual. These larger periods last for about 100 years. The last time it happened was in the 1500s when the Earth was experiencing hotter temperatures than it is now. Obviously polution was not playing as big a part as it was back then, hence it was not man made. This could be the explanation of unusually high temperatures we are experiencing now.
however, what if this is wrong and we are the cause? We cannot be complacent and just assume it is natural. We must act just in case.
PS the depletion of the ozone layer is not the greenhouse effect as some have been sugesting.
2006-06-19 20:45:43
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answer #2
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answered by Anonymous
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Actually, smoke is natural. There is such a thing as natural fire.
Forest fires created by lightening and heat do occur NATURALLY.
But I digress.
There is reason to believe that global warming is natural and I will explain why.
The earth goes through climate changes, you know, the ice age and so on, right? Right.
Besides, how do you think the dinosaurs existed? There is no way that so many reptiles of such gargantuan porportions could possibly exist in our climate, so when they were alive, it was incredibly hot, or at least it would have been to us. Reptiles need outside heat to live, yes? Why is this? It's because they cannot produce their own body heat and cannot effectively regulate their body temperatures like mammals. Which is why it's so easy to believe the ice age is what actually killed the dinosaurs. What does this have to do with it?
Well, the dinosaurs, as far as we know did not create civilization, and therefore could not have built smoke belching factories, and yet lived in a very hot environment. And that was over 65 million years ago. I think we're about due for another shift in the climate.
I could go on and on and on, but I'm getting tired. Perhaps I could direct you to a more helpful website?
So climate shifts do occur naturally, and have long before humans even existed.
Although I'm sure that pollution does have a little to do with it. I think that humans are so insignificant that in the long run, it doesn't matter. Long after the last remnants of humanity are ashes, the earth will have healed herself and repopulated with other animals. After all, the earth is probably older than we could fathom, and humans have only been around some 2 million years.
2006-06-19 21:01:23
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answer #3
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answered by militantfairy 5
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If you are seriously questioning then I have answer
Its certainly man made the concept of Global warming has started when scientists discovered that Ozone layer is bieng depleted over the earth
The Ultra violet rays reaching earth would cause immense heat which may lead to destruction by melting ice thats there at the poles
The cause for Depletion of this layer is due to the CFC( Chloro Floro corbons ) that are released from the electronic equipment as well as the smoke genetrating factories and vehicles
Its fact that growing pollution and the depletion of the natural forests are the major causes for global warming
2006-06-19 20:39:03
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answer #4
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answered by Ravi Shankar 3
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If you are talking about the global warming that we are currently undergoing this is man made, and the proof is the 2 degree C drop in global temperature that happened after 911 when all planes were grounded. However over the course of history the planet has undergone some radical temperature changes naturally.
2006-06-19 20:29:03
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answer #5
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answered by break 5
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Many people believe that global warming is a man made phenomenon but I can make a point that the sun is growing and getting closer and closer to the earth which contributes to the earth's rising temperature which in turn causes global warming, indicating that global warming is a natural/destined event.
2006-06-19 20:27:10
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answer #6
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answered by Anonymous
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Global Warming is a theory that the current climate change, (and climate change has happened throughout Earth's history), is being caused by man.
The main reason why there is such controversy is people get it wrong. They think that scientists are saying Man is the sole cause for this. But that isn't true. We know the Earth is heating up, we just don't know if this is mainly because of us!
But we DO know how we could possibly be effecting climate change and we DO know we can do something about it.
2006-06-19 22:52:17
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answer #7
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answered by Bapboy 4
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Both ... (but as of right now it's man made, we're prematurly making it warm up b4 it's time... destroying the equalibrium/balance)
Earth once had a Green House Effect long ago after all the volcano's were about done errupting and spewing, alittle bit b4 water showed up on Earth. So yes nature can do it too (and it was still cooling off during the Dino's age, it was "Hot hot hot" lalala LOL sorry had to say the song lyrics)
2006-06-19 20:27:17
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answer #8
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answered by Am 4
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Global Warming is certainly a man made. Because it caused due to saturation of greenhouse gases (CO2,etc) in excess amount around the earth.However, naturally there is always a blanket of greenhouse gases around earth which keeps surface of earth warm enough to let living creatures to flourish.But, due to pollution man has caused level of amount of these gases to increase, as well as, increasing temperature of earths surface, causing Global Warming. That's why it can be assumed as man made or man caused. However, it will cause natural calamity's such as tsunami, sea floods. If continued it could change earth to make it similar like Mars.
2006-06-19 20:39:53
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answer #9
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answered by AMEY 1
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international warming is organic. The solar has been shining in the international for over 5 billion years. i imagine there is not any longer sufficient records to envision if guy has an effect on international warming. we were measuring and recording atmospheric temperature for more effective or less one hundred years. Divide one hundred through 5 billion and also you get a wide decision so small that that is an insignificant percentage. contained in the previous due 1970's we had record chilly and snow in Northwestern Pennsylvania. After many years of chilly, human beings were predicting the starting up of yet another ice age. That became about 25 years in the past.
2016-11-15 00:27:23
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answer #10
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answered by ? 4
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Global warming, also can be made in natural, only that man have been speeding it up. For example, volcanoes and geyser through in the atmosphere several gases also, that not only contribute to global warming but to acid rain. But man have speed this process up!!!
2006-06-19 22:29:38
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answer #11
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answered by ogloriad 4
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