Which of the following substances are biodegradable waste?
Biodegradable materials are those which can be decomposed by bacteria or other natural organisms and not adding to pollution. Examples: Food wastes, biodegradable plastics, paper wastes, etc.
Non-biodegradable wastes are those which cannot be decomposed by bacteria or other natural organisms and contributes to pollution. Examples: Metal scraps, plastics, aluminium cans, etc.