Author Question: Life forms in the Precambrian included A) trilobites. B) brachiopods. C) coelacanths. D) ... (Read 66 times)

codyclark

  • Hero Member
  • *****
  • Posts: 538
Life forms in the Precambrian included
 
  A) trilobites.
  B) brachiopods.
  C) coelacanths.
  D) cyanobacteria.

Question 2

Life forms in the Precambrian include
 
  A) trilobites, brachiopods and stromatolites.
  B) cyanobacteria and trilobites.
  C) the agnatha and the coelacanths.
  D) stromatolites and certain primitive blue-green algae.



Pamela.irrgang@yahoo.com

  • Sr. Member
  • ****
  • Posts: 323
Answer to Question 1

Answer: D

Answer to Question 2

Answer: D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

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?

The familiar sounds of your heart are made by the heart's valves as they open and close.

For a complete list of videos, visit our video library