Question

Define the terms biodegradable and non-biodegradable substance. Classify the following items into these two categories : Newspapers, Glass bottles, Polythene bags, Vegetable peels

Assertion (A) : The waste we generate daily may be biodegradable or non-biodegradable. Reason (R) : The waste generated, if not disposed off properly may cause serious environmental problems.

Name the term used for the materials which cannot be broken down by biological processes. Give two ways by which they harm various components of an ecosystem.

Why are some substances biodegradable and some non-biodegradable?