1) prevailing westerly winds
2)the North Atlantic Drift ocean current
ႊ့These two moderates much of the air temperature over Northwestern Europe.
Hope this helps!
Should probably look this up?
Explanation:
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The main sources are humans which is why it is stated that the global warming is man made. The levels have increased beyond all measure, increasing since the 1950s by a 100 CO2 parts per million, and it keeps increasing by 2ppm on a yearly basis. The statistics from the industrial revolution era are not much different and show how much we've increased the CO2 in modern times.
It destroys there home by adding poisonous materials and substances a long with things they can choke on.