Energy crisis and its environmental impact
Energy may be defined as any property, which can be produced from or converted into work. In today’s world for any development and for all industrial operations, energy is a prerequisite. Life is unthinkable without energy. Energy production and energy utilization are the indicators of a country’s progress. Heat, light, electricity are different forms of energy. While
energy drives the world, the energy generated and utilised affects environment on a phenomenal scale. More population, rapid industrialisation, increased energy generation, over production, uncontrolled consumption and damages to environment are all inter-linked issues. Major issues are slowly being converted into crisis threatening our survival. (Energy crisis and its environmental impact)
Background history of energy usage
Fire was probably the first human energy technology. Charcoal from fires has been found at sites occupied by our early ancestors. Wind and waterpower have been used early as long. Muscle power provided by domestic animals has been important for agriculture. The invention of the steam engine, together with diminishing supplies of wood in industrializing countries caused a switch to coal as our major energy source in the nineteenth century. Coal in turn, has been replaced by oil in this century due
to the ease of shipping, storing and burning liquid fuels. Recently electricity and gas (petrol) has changed the economic prosperity and lifestyle in many countries. (Energy crisis and its environmental impact)
Renewable and non-renewable energy sources
Energy sources that are being made available continuously are known as renewable energy sources. (Eg). geothermal energy, wind energy, tidal energy, solar energy, ocean currents, nuclear fusion, gobar gas, biomass and vegetable refuse etc.
Non-renewable sources of energy – those sources, which are being accumulated in nature from a very long time and cannot be replaced if they are exhausted. (Ex). Coal, ores, petroleum, timber, natural gas, electricity etc. Fossil fuels like petroleum, natural gas and coal are now providing about 95% of all commercial energy in the world. (Energy crisis and its environmental impact)
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