1
Q
What are the factors that increase the rate of decay?
A
Warm temperature
Oxygen excess
Moist conditions
Using compost (decomposed organic matter used as fertiliser)
2
Q
What is biogas?
A
Produced by anaerobic decay - made up of mainly methane which can be burned as a fuel
3
Q
How is biogas made ?
A
Large scale from a waste material
