Question

How do microorganisms helps in waste treatement?

Answer 1

1. Some bacteria living in oxygenated atmosphere break the waste into utilisable compunds. [1 mark]

2. Methanogenic bacteria degrade animal faeces, vegetable peels to produce methane gas. This acts as a substitute for coal.[1 mark]

3. Algae such as chlorella is used for the consumption of carbon dioxide provided by the astronauts and the production of oxygen in the spacecraft. [1 mark]