Non-Biodegradable
Non-biodegradable substances are materials that microorganisms cannot break down easily or quickly.
Practice This ConceptMain explanation
Teacher explanation
Materials like plastic, glass, and many synthetic chemicals stay in the environment for a long time. Because they do not decompose rapidly, they can accumulate in soil, water, and landfills. This makes their careful use and disposal very important.
Example
A plastic bottle left in a landfill may remain there for many years without natural decomposition.
Simple analogy
If microbes cannot finish the job, the waste stays for a long time.
Common confusion
Students sometimes think non-biodegradable means completely invisible or magically everlasting. The correct idea is that it persists for a very long time and accumulates.
Exam tip
In exam answers, mention accumulation and long persistence, not just that the material is harmful.
Answer writing and exam use
1-mark use
Write the exact meaning of non-biodegradable in one clean line.
2-mark use
Define non-biodegradable and add one example or condition.
3-mark use
Explain non-biodegradable, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
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