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Which group of organisms appeared for the first time during the Ordovician period? A. plants that live on land B. plants that reproduce with seeds c. single-celled organisms tha…

Which group of organisms appeared for the first time during the Ordovician period? A. plants that live on land B. plants that reproduce with seeds c. single-celled organisms tha…
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Which group of organisms appeared for the first time during the Ordovician period?

A. plants that live on land
B. plants that reproduce with seeds
c. single-celled organisms that perform photosynthesis
D. animals with shells or other hard parts

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User Zuabi
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D- animals with shells or other hard parts.
Hope this helps!
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User MFisherKDX
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D. animals with shells or other hard parts

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User Rondu
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