1. PRESENTED BY,
CHINCHUMOL S

3. Bio gas
 It refers to a mixture of gases produced by the
breakdown of organic matter in the absence of
oxygen.
 It can be produced by recycled waste.

4. Uses of bio gas
 Biogas is a fuel used as an energy source for light,
heat or movement.

5. Making of biogas
 Biogas is produced by the break down of organic
waste by bacteria without oxygen.