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symbo symbo
wrote...
Posts: 1970
Rep: 2 0
7 years ago
Which unexpected chemical compound has recently been discovered on Mercury?
A)   Nitrogen dioxide in Mercury's upper atmosphere
B)   Cyanide, poisonous to humans, in the troposphere
C)   Ammonia, escaping from fissures in the Caloris Basin
D)   Water ice, at the north and south poles
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 77 times
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hyponoticahyponotica
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Posts: 1396
7 years ago
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symbo Author
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7 years ago
Brilliant
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Yesterday
this is exactly what I needed
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2 hours ago
Thanks
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