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Natural evidence of climate change, The Distant Past, historical sources,…
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The Distant Past
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fossilised animals, plants, and pollen that no longer live in the UK
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warm periods are called interglacials. cold periods are called glacials, such as ice ages
historical sources
this evedence shows that every few hundred years the climate changes by 1-1.5 degrees hottor or colder than average temperatures today
this evidence isn't totally accurate
because the weren't intended
to be used to prove climate change
exists.
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maisie - ice cores :
to extract the ice they drill a core through the ice and measure the amount of trapped carbon dioxide in the ice layers
from this ice we can tell when there was cold period, glacial periods and warmer periods
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scientists have found lots of ways to prove that climate was different in the past. Here are some ways they can tell how:
landforms, like U-shaped valleys left by melting glaciers tell us the climate had warmed.
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