Get premium membership and access revision papers with marking schemes, video lessons and live classes.
Processing. Please wait.

 Form 4 Geography online lessons on energy

Biogas as a source of energy

 (1m 49s)
252 Views     SHARE

Download as pdf file

Answer Text:
Biogas as a source of energy
Human and animal wastes are used to produce methane (biogas) through fermentation which is used for cooking and lighting.