Which statement best describes the atmosphere of Venus?

Which statement best describes the atmosphere of Venus?
 
  a. Similar to Earth, it contains mostly nitrogen and oxygen.
 b. Venus' atmosphere is high in carbon dioxide and considered a runaway greenhouse.
  c. Venus has a negligible atmosphere.
 d. Similar to Uranus, it contains mostly methane.
 e. Similar to Mercury, it has a thin atmosphere high in carbon dioxide.

Question 2

The surface rocks on Venus are similar to ____ rocks on Earth.
 
  a. oxide-rich
 b. anorthosite
 c. sedimentary
  d. granitic
 e. basaltic

Question 3

How is it that Earth has less CO2 in its atmosphere than Venus, even though both planets likely outgassed the about the same amount of CO2 during their development?
 
  a. Earth absorbed most of the CO2 into its oceans.
 b. Venus absorbed most of the CO2 into its oceans.
  c. Earth lost most of its CO2 because of weak gravity.
  d. Venus rotates too slowly to lose any of its CO2.
 e. Venus retained much of its CO2 in polar ice.

Question 4

Which characteristic of Venus has led many to call it the sister planet to Earth?
 
  a. Venus and Earth have very similar atmospheres.
  b. Venus is almost the same size as Earth.
 c. Venus and Earth have liquid water on the surface.
  d. Venus is the same distance from the Sun as Earth.
  e. Venus and Earth have composite volcanoes.

Question 5

Studies have shown that the ice located in the south pole of Mars is mostly ____.
 
  a. H2O
 b. NO2
 c. CO2
 d. O2
 e. FeO2