<span>A greenhouse gas is a gas that contributes to the greenhouse effect by absorbing infrared radiation. It is important because it keeps the Earth's surface heated and able to maintain life upon it.</span>
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Distance decay can effect migration mainly through the push pull factors. Distance decay is the idea that the further away an idea gets from its source, the less is known about it. ... Also the many Intervening obstacles between the source and the destination would slow down push/ pull factors even more.
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southern ontario , canada
You just answered your own question...