12th Zoology

Waste management

Waste management

Human activities related to livelihood and welfare generate waste.
All wastes are pollutants and they create pollution in one way or other.
Fundamentally air, land and water pollution results mostly due to improper
disposal of wastes. (Waste management)

Pollution, Pollutants

Pollution is the human caused addition of any material or energy
(heat) in amounts that cause undesired alterations to water, air or soil. Any
material that causes the pollution is called a pollutant.

Classification of wastes

1. Bio – degradable waste

These are wastes capable of being removed or degraded by
biological or microbial action. Waste from agricultural products, animal wastes
and waste from food processing, leather, fibre, paper and wood etc. come
under this group. (Waste management)

2. Non bio-degradable waste

The substances which are normally not acted upon and decomposed
by microbes are non-bio degradable wastes. It includes mineral waste,
mining waste and industrial waste and non-degradable metallic and plastics
substances. (Waste management)

3. Mixture of biodegradable and non-biodegraded wastes

It includes municipal waste and industrial waste. Municipal waste
contains household garbage, piles of food scrapes, old newspaper, discarded
and throw away materials, glass, cans, old appliances, broken materials,
leather shoes, fibres, plastics and others. Construction waste materials,
packaging materials, sewage, hospital waste, junk and vehicles are varied
types of urban wastes. All these wastes are found in the form of semisolid,
solid, semiliquid, sludge and in fly ash form. (Waste management)

Related Topics in Zoology:

Bio Zoology All Important Topics

  1. Human population and explosion

  2. Population Explosion

  3. Growing Population and Environmental impacts

  4. Global warming – Green house effect

  5. Ozone layer depletion

  6. Prevention and Effect of Ozone depletions

  7. Waste management – Classification

  8. Management of hazardous wastes

  9. Management of non hazardous wastes

  10. Waste water treatment and management

  11. Biodiversity

  12. Conservation of Biodiversity

  13. Characteristics of a Bioreserve

  14. Energy crisis and its environmental impact

  15. Steps to be taken to resolve energy crisis

  16. Environmental impacts of Power Sources

  17. Poverty and environment

  18. Fresh water crisis and management

Unit 6. APPLIED BIOLOGY Topic List Zoology

  1. Livestock and Management

  2. Important cattle breeds and their characteristics

  3. Milch breeds (or) Dairy breeds

  4. Dual purpose breeds & Draught breeds

  5. Exotic breeds of cattle

  6. Common diseases and control in Cattle – Contagious diseases

  7. Non-contagious diseases – Cattle

  8. Techniques adopted in cattle breeding

  9. Poultry Breeds

  10. Farming methods

  11. Poultry byproducts

  12. Fish Pond

  13. Edible Fishes Of Tamilnadu

  14. Medical Lab Techniques – Stethoscope

  15. Sphygmomanometer

  16. Haemocytometer

  17. Urine Sugar analysis

  18. ECG Electrocardiogram

  19. Computed Tomography CT

  20. Endoscopy (Laproscopy) techniques , Artificial Pacemaker

  21. Autoanalyser

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