Question

List two classes into which garbage is classified.

Answer 1

There are two types of garbage:

1. Biodegradable wastes: Substances that can be decomposed by the action of micro-organisms are called biodegradable substances.
   e.g. Fruit and vegetable peels, cotton, jute, dung, paper etc.

2. Non-biodegradable Wastes: Substances that cannot be decomposed by the action of micro-organisms are called non-biodegradable wastes. 
   e.g. Plastic, polythene, pesticides etc.
   Most of the non-biodegradable wastes results from human activities.