Which of these moons has the densest atmosphere? A) Europa B) ...

[formula1]

Which of these moons has the densest atmosphere?
 
  A) Europa B) Io C) Triton D) Titan E) Callisto

Question 2

Why is Earth's continental crust lower in density than seafloor crust?
 
  A) Continental crust comes from volcanoes while seafloor crust comes from geysers.
  B) Continental crust is made from a low-density volcanic rock called basalt.
  C) Continental crust is made as the lowest-density seafloor crust melts and erupts to the surface near subduction zones.
  D) Continental crust comes from Earth's inner core while seafloor crust comes from the outer core.

[at]

Answer to Question 1

D

Answer to Question 2

C

[formula1]

TYSM

[cpetit11]

Excellent