Answer: I believe it was Johann Wolfgang Dobereiner
Explanation:
There are a couple reasons the ice is important to polar bears, but given the choices you have the correct one would be:
A. The polar bears can’t out swim the seals, so they sit quietly on an ice platform and attack the seals when they come up for air.
Guanine and adenine, structure-wise, are purines.
<span>All waves travel at the same speed if no medium is present.
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