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KENHUYNH96 KENHUYNH96
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6 years ago
Evidence suggests that complex multicellular, water-dwelling organisms first appeared on earth
 
  A) in the early 1920s.
  B) 600 million years ago.
  C) 10 million years ago.
  D) 4 million years ago.
  E) 2 million years ago.
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wrote...
6 years ago
Answer: B
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