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Biology 9 Online
OpenStudy (anonymous):

Neptune appears blue because of _____ at its surface. (Points : 3) methane gas hydrogen copper soil

OpenStudy (anonymous):

methane gas

OpenStudy (anonymous):

i think this is methane gas @lexirettenmyer do you think so too?

OpenStudy (anonymous):

Yes, Neptune contains large quantities of methane gas that makes it appear blue

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