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biogas ['baɪǝʊɡæs] n
bioenerg.	حيوغاز   ؛غاز أحيائي
med.	غازٌ بَيولوجِيّ
biogas Gas, rich in methane, which is produced by the fermentation of animal dung, human sewage or crop residues in an air-tight container. It is used as a fuel, to heat stoves, lamps, run small machines and to generate electricity. The residues of biogas production are used as a low-grade organic fertilizer. Biogas fuels do not usually cause any pollution to the atmosphere, and because they come from renewable energy resources they have great potential for future use n
environ.	غاز حيوي

biogas: 4 phrases in 3 subjects

Agriculture	1
Bioenergy	2
Climatology	1