These are organic materials that can be broken down naturally into simpler, harmless molecules by microorganisms (like bacteria and fungi) over time.
Animal bones: Composed of organic collagen matrices and minerals; they decay naturally over time.
Leather: Made from animal hides, which are organic matter and will naturally decompose.
2. Non-Biodegradable Substances
These are synthetic materials, toxic chemicals, or heavy metals that cannot be broken down by biological processes. They persist in the environment for a very long time, often causing pollution.
DDT (Dichloro-diphenyl-trichloroethane): A synthetic pesticide notorious for resisting degradation and accumulating in the food chain (biomagnification).
Mercury & Lead: Toxic heavy metals that are elemental in nature and cannot be decomposed.
Silver foils: Metals do not break down through microbial action.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
