Sentences with phrase «high abundance ratio»
It will also study solid and gaseous samples for other chemical signs of past or present life, such as a very high abundance ratio of methane to heavier hydrocarbons (ethane, propane, butane) and chirality (a preference for either left - handed or right - handed organic molecules).
https://www.scientificamerican.com/ Not exact matches
Although some non-biological chemical reactions can create such high light - carbon ratios (McCollom and Seeward, 2006), those found were so skewed towards Carbon - 12 that it's unclear exactly how such reactions could have created such abundances.