Which one is right?
Now a paper in Science argues that organic chemicals in the rock come mostly room ______on earth rather than bacteria on Mars.
A configuration
B constitution
C condemnation
D contamination
The answer is D, but the question is also a little bit wrong.
I think it should read:
Now a paper in Science argues that organic chemicals in rocks come mostly from contamination on earth rather than bacteria on Mars.
27 de noviembre de 2014
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Danny is correct.
27 de noviembre de 2014
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