Growing Population and Environmental impacts
Increasing numbers of people put increasing demands on the
environment, both through demands for resources and through production of wastes. Most of the human population survived through subsistence agriculture to meet their needs. After the modern medicines and industrial revolution, the death rate plummeted and population growth increased.
(Growing Population and Environmental impacts)
What are the impacts of rapid growth on a population that is largely engaged in subsistence agriculture? Five basic alternatives are being played out to various degrees,
- people can subdivide farms among the children or intensify cultivation of existing land to increase production per unit area.
- open up new land to farm.
- move to cities and seek employment.
- engage in illicit activities for income.
- emigrate to other countries legally.
The rapid population growth especially affects women and children. Increasing the average wealth of a population affects the environment both positively and negatively. (Growing Population and Environmental impacts)
Related Topics in Zoology:
Bio Zoology All Important Topics
- Human population and explosion
- Population Explosion
- Growing Population and Environmental impacts
- Global warming – Green house effect
- Ozone layer depletion
- Prevention and Effect of Ozone depletions
- Waste management – Classification
- Management of hazardous wastes
- Management of non hazardous wastes
- Waste water treatment and management
- Biodiversity
- Conservation of Biodiversity
- Characteristics of a Bioreserve
- Energy crisis and its environmental impact
- Steps to be taken to resolve energy crisis
- Environmental impacts of Power Sources
- Poverty and environment
- Fresh water crisis and management
Unit 6. APPLIED BIOLOGY Topic List Zoology
- Livestock and Management
- Important cattle breeds and their characteristics
- Milch breeds (or) Dairy breeds
- Dual purpose breeds & Draught breeds
- Exotic breeds of cattle
- Common diseases and control in Cattle – Contagious diseases
- Non-contagious diseases – Cattle
- Techniques adopted in cattle breeding
- Poultry Breeds
- Farming methods
- Poultry byproducts
- Fish Pond
- Edible Fishes Of Tamilnadu
- Medical Lab Techniques – Stethoscope
- Sphygmomanometer
- Haemocytometer
- Urine Sugar analysis
- ECG Electrocardiogram
- Computed Tomography CT
- Endoscopy (Laproscopy) techniques , Artificial Pacemaker
- Autoanalyser