8. What is a biodigester?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
A biodigester is equipment
produces carbon dioxide, hydrogen
and fuel gases (biogases)
methane from organic material
decomposition (dung, food waste,
cane waste, etc.). The is used in
heating, energy for motors and
and it even has
uses. Biodigesters are widely in
public waste depositories in rural
areas. Besides biogas the
organic waste be turned into good
fertilizer.