Question

Which substance cannot be decomposed in the environment?

• A. Dry leaves
• B. Food
• C. Dead organism
• D. Plastic

Hint:

Always remember: Biodegradable = can be decomposed (like food, leaves). Non-biodegradable = cannot be decomposed (like plastic, glass, metals).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Biodegradable substances can be broken down naturally by microorganisms, while non-biodegradable substances cannot.
Dry leaves, food, dead organisms: All are biodegradable and decompose naturally.
Plastic: Non-biodegradable, cannot be decomposed by natural processes, and remains in the environment for hundreds of years.
Step 2: Detailed Explanation:
Plastic causes long-term environmental pollution as it does not decompose. This leads to land and water pollution and is harmful to living organisms.
Step 3: Final Answer:
The substance that cannot be decomposed in the environment is Plastic.