The document classifies wastes based on their properties and effects. Biodegradable wastes like food, paper, and plant materials can be broken down by microorganisms, while non-biodegradable wastes like plastics accumulate and do not decompose. Wastes are also classified as hazardous if they are unsafe substances, or non-hazardous if they are safe materials like paper and cardboard. Proper disposal and segregation of wastes is important to protect human and environmental health.

1. CLASSIFICATION
OF WASTES
ACCORDING TO
THEIR
PROPERTIES

2. a. Biodegradable
• wastes that can be broken
down(decomposed)into their
constituent elements by bacteria and
other microorganisms.
• the term can be applied to both liquid
and solid waste.

3. Examples:
• Human and animal waste
• Food waste
• Paper
• Agricultural waste

4. b. non-biodegradable
• any discarded item that cannot
be broken down by living
organisms
• accumulates in the environment
because it cannot return to its
origins

5. EXAMPLES:
• Plastics
• Bottles
• Old machines
• containers

6. CLASSIFICATIONS OF WASTES ACCORDING TO
THEIR EFFECTS ON HUMAN HEALTH AND THE
ENVIRONMENT
1.HAZARDOUS WASTES
- unsafe substance used commercially,
industrially, agriculturally, or economically.

7. Examples:
• paint
• Motor oil
• Pesticide
• Drain opener
• Prescription drugs
• Air freshener
• batteries

8. b. non-hazardous
• Safe substances used commercially,
industrially, agriculturally, or economically

9. Examples:
• Papers
• Cardboard
• Linings
• Wrappings
• Paper packaging materials

10. Why is it important to dispose our
garbage properly?

11. Why is it important to segregate wastes?

12. What should be done to hazardous
wastes?

13. EVALUATION:
• Draw a biodegradable and non-biodegradable wastes.
SCORING RUBRIC
Content 2 pts.
Workmanship 2 pts.
Neatness 1 pt.
___
5 pts.