The actual matter density of the universe, accounting for all of ...

[sammy]

The actual matter density of the universe, accounting for all of the luminous matter and all of the dark matter known to exist in galaxies and clusters, is what fraction of the critical density?
 
  A) 25 percent B) 10 percent C) 200 percent D) 1 percent E) 100 percent

Question 2

The tectonic surface features we see on Triton are similar to the grooves of Ganymede.
 
  Indicate whether the statement is true or false

[juwms]

Answer to Question 1

A

Answer to Question 2

TRUE