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to find out what the composition of the atmosphere was
The cores are drilled from the ice itself - ice sheets in Antarctica and Greenland.
Glaciers and/or the Arctic/Antarctic ice caps.
Ice Cores shows the layers of snow it tell about atmosphere... The Tree show it age in tree rings and shows dryness mostly about the weather...
Ice cores are very brittle due to the quick change in pressure.
to find out what the composition of the atmosphere was
The cores are drilled from the ice itself - ice sheets in Antarctica and Greenland.
its for gold
You can see it!
I don't think you can find one in aqworlds.
the frost dragon