The diagram is that of a typical biogas plant

The diagram is that of a typical biogas plant. Explain the sequence of events occuring in a biogas plant. Identify a, b and c.

Bio wastes are collected and a slurry of dungs is fed, a floating cover having gas outlet is placed over slurry which keeps on rising as the gas is produced in the tank, the spent slurry is removed through another outlet and may be used as fertilizer.
a. Sludge loader
b. gas holder
c. dung and water.