The Rovers Named Spirit and Opportunity That Recently Explored the Surface

question 70

Multiple Choice

The rovers named Spirit and Opportunity that recently explored the surface of Mars discovered:

• A) tiny streams of flowing water too small to be detected by orbiting satellites
• B) minerals that must have formed in an environment rich in liquid water
• C) dust storms that rapidly erode the surfaces of most geological formations
• D) the northern polar ice cap is made primarily of frozen water ice
• E) the presence of methane that arises from biological life