Question

What do biodegradable materials mean?

• A. Only heat can act on these materials to degrade them
• B. Only acids can act on them to degrade them
• C. Microorganisms can act on them to degrade them
• D. All of the above

Answer 1

The correct option is C Microorganisms can act on them to degrade them

Biodegradable materials can be degraded when microorganisms act on them.
Man made materials like plastics cannot be broken down by the action of bacteria or other saprophytes. These materials will be acted upon by physical processes like heat and pressure.