This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The first jawed fish were the:a. placoderms. b. acanthodians. c. ostracoderms. d. ... (Read 14 times)

tth

  • Hero Member
  • *****
  • Posts: 579
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.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bimper21

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 15, 2018
Answer to Question 1

B

Answer to Question 2

E


tth

  • Member
  • Posts: 579
Reply 2 on: Jul 15, 2018
Gracias!

Liddy

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Fish Fish
angler fish angler fish
angler fish 3 angler fish 3
Elephant Nose Fish Elephant Nose Fish
Fish and fries Fish and fries
Structure and function of the gills of a bony fish. Structure and function of the gills of a bony fish.
Video: Transcription—A molecular view

For a complete list of videos, visit our video library