Assertion: planet's atmosphere | /r/HasProperty | rich
Facets:
value: originally
type: OTHER
value: on the earth
type: LOCATION
value: in ch
type: LOCATION
value: in h
type: LOCATION
Source sentences:
text: Thus, it is believed that on the earth the atmosphere was originally rich in H 2 O, CO 2 , and CH 4 and heavier hydrocarbons, but as a result of the vital activity of simple microorganisms and vegetation under the influence of the sun’s energy, the carbon dioxide was broken down into carbon and oxygen.