Assertion: bacteria | /r/HasProperty | major source of methane
Facets:
value: often
type: TEMPORAL
value: in such environments
type: LOCATION
Source sentences:
text: Methanogenic archaea play a pivotal role in ecosystems with organisms that derive energy from oxidation of methane, many of which are bacteria, as they are often a major source of methane in such environments and can play a role as primary producers.
text: Bacteria (a major division of the Monera) are characterized by rigid or semi-rigid cell walls, propagation by binary division of the cell, and a lack of mitosis.