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Author Question: The first jawed fish were the:a. placoderms. b. acanthodians. c. ostracoderms. d. ... (Read 32 times)

tth

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on: Jul 15, 2018

The first jawed fish were the:a.
   placoderms.
  b. acanthodians.
  c. ostracoderms.
  d. chrondrichthyes.
  e. agnatha.



Question 2

The mass extinction at the end of the Ordovician set the stage for:a.
   more species to go extinct.
  b. groups of organisms to diversify.
  c. groups of organisms to withdraw from previous habitats.
  d. groups of organisms to repopulate abandoned niches.
  e. groups of organisms to diversify AND to repopulate abandoned niches.



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bimper21

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Reply #1 on: Jul 15, 2018
Answer to Question 1

B

Answer to Question 2

E


tth

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Reply 2 on: Jul 15, 2018
Thanks for the timely response, appreciate it

mcarey591

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Reply 3 on: Yesterday
Excellent

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