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Title: Comets are made up primarily of ________. Post by: bromonox on Dec 6, 2015 Comets are made up primarily of ________.
A) frozen water, carbon dioxide, and methane B) iron-nickel alloys C) frozen hydrogen D) silicate minerals, like rocks on Earth Title: Re: Comets are made up primarily of ________. Post by: Pulsa on Dec 13, 2015 Content hidden
Title: Re: Comets are made up primarily of ________. Post by: bromonox on Dec 15, 2015 Grazie! (means thank you in Italian :p)
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