Types of Waste (Biodegradable vs Non-Biodegradable)

• Definition: Waste materials that can be easily broken down (decomposed) into simple, harmless substances in nature by the action of microorganisms (bacteria, fungi, and earthworms).
• Characteristics: It rots over time and eventually mixes back into the soil, acting as a natural fertilizer (compost).
• Examples: Leftover food, fruit and vegetable peels, fallen leaves, paper, wood, cotton clothes, and animal dung.

• Definition: Waste materials that cannot be broken down or decomposed by natural microorganisms.
• Characteristics: This waste remains exactly as it is in the environment for hundreds, or even thousands of years, causing severe soil and water pollution. It chokes animals and blocks drainage systems.
• Examples: Plastic bags, glass bottles, styrofoam, synthetic fibers (nylon), and aluminum cans.

Beyond the biological breakdown, waste is also classified by its source and danger level:

• E-Waste (Electronic Waste): Old computers, mobile phones, dead batteries, and wires. This is highly toxic because it contains heavy metals like lead and mercury.
• Biomedical Waste: Used syringes, bloody bandages, and expired medicines from hospitals. It must be strictly incinerated (burnt at high temperatures) to prevent infections.
• Industrial Waste: Toxic chemicals, dyes, and ash released by large factories into rivers.