There are charts (you can find them on the internet if you look) that go back thousands of years that chart the temperature trends and even explain how they came up with those temperatures. If your question is about global warming then what is really the big concern is no one is quite sure how big an effect green house gases are on global warming. All they can say for sure is that in the last 100+ years (around the start of the industrial revolution) there has been a dramatic increase in average temperature.-d-Nope! It isnt increasing. Yay!......
No there's not. The Earth has gone through many periods of warming and cooling. There are charts (you can find them on the internet if you look) that go back thousands of years that chart the temperature trends and even explain how they came up with those temperatures. If your question is about global warming then what is really the big concern is no one is quite sure how big an effect green house gases are on global warming. All they can say for sure is that in the last 100+ years (around the start of the industrial revolution) there has been a dramatic increase in average temperature.
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Nope! It isn't increasing. Yay! xD
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