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Author Question: Animals with dorsal nerve cords are called A) phyla. B) chordates. C) vertebrates. D) ... (Read 142 times)

Engineer

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on: Jun 22, 2018
Animals with dorsal nerve cords are called
 
  A) phyla.
  B) chordates.
  C) vertebrates.
  D) mammals.
  E) amphibians.

Question 2

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.


soda0602

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Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: B


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