Astronomy current events question: nitrate molecules on Mars

Astronomy 210L, spring semester 2015
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)
Nancy Neal-Jones, William Steigerwald

, "NASA's Curiosity Rover Finds Biologically Useful Nitrogen on Mars" (March 24, 2015)
NASA's Mars rover Curiosity discovered that Mars had conditions habitable for life in its past, based on gases analyzed from:
(A) polar cap dry ice.
(B) heating up soil samples.
(C) a recent dust storm.
(D) melting permafrost.
(E) volcanic vents.

Correct answer: (B)

Student responses
Sections 30678, 30679, 30680
(A) : 10 students
(B) : 33 students
(C) : 3 students
(D) : 4 students
(E) : 1 student

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