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 2
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