The Law of Superposition.
The Law of Superposition states that each layer is younger than the one beneath it.
A fossil would from through mineral replacement by replacing the existing material of the animals bones with minerals, to become petrified. The Minerals will keep the fossil preserved longer.
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its a diploid cell that comes from the fusion of two haploid gametes.
aka a fertilized ovum.
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Some species we see in Alaska and nowhere else in the Wolrd are:
Bats
Shrews
Bears
Seals
White Wolfs
Sea lions
Racoons
Walrus.
Bears, Seals, White Wolfs and Sea lions survive the cold weather much more than those other animals.