Which of the following statements is an overall summary of the findings from the Viking biology experiments?
A) the martial soil showed no signs of chemical or biological activity
B) the Martian soil showed clear signs of biological activity
C) the Martian soil is chemically reactive but shows no signs of biological activity
D) the Martian soil contained organic molecules but showed no signs of biological activity
Question 2
Observations of the cosmic background radiation from the COBE satellite revealed tiny variations in its temperature from one place to another (corresponding to a few millionths of a degree Kelvin).
Indicate whether the statement is true or false
Campbell biology 8-6 (9of9)
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