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The Paleozoic Era is noted for which two changes?

a) rocks were formed
b) the earth heated up
c) people appeared on earth
d) mountains were formed

Just need to know if my answer or right or wrong. Thanks! :)

d

  • science -

    D is correct. The Appalachians, Urals, and Tasmans are several of the mountain chains that were formed.

  • science -

    thanks jen :)

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