Verified Solution Science Our Environment NCERT Class 10th · Ch 13

Why are some substances biodegradable and some non-biodegradable?

450 views 79 helpful Updated May 31, 2025
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Answer

Substances are classified as biodegradable or non-biodegradable based on how they are broken down in nature.

Biodegradable Substances:

These are materials that can be broken down by natural processes, mainly by microorganisms like bacteria and fungi.
Examples: Food waste, paper, wood, cotton.
Reason:- These substances are made from natural materials that microorganisms can easily decompose into simpler, harmless substances.

Non-biodegradable Substances:

These are materials that cannot be broken down by natural processes or take a very long time to decompose.
Examples: Plastic, glass, synthetic fibers, metals.
Reason: -These substances are made from synthetic (man-made) materials or chemicals that microorganisms cannot break down easily. They remain in the environment for a long time and can cause pollution.

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Other Chapters in Class 10th Science

Magnetic Effects of Electric Current Electricity Life Processes Control and Coordination How do Organisms Reproduce? Heredity Light – Reflection and Refraction The Human Eye and the Colourful World Chemical Reactions and Equations