Global warming refers to an average increase in the Earth's temperature, which in turn causes changes in climate. A warmer Earth may lead to changes in rainfall patterns, a rise in sea level, and a wide range of impacts on plants, wildlife, and humans. When scientists talk about the issue of climate change, their concern is about global warming caused by human activities.
Deforestation is the conversion of
forested areas to non-forested land, for uses such as: pasture, urban use,
logging purposes, and can result in arid land and wastelands. In many
countries, deforestation is ongoing and is shaping climate and geography.
Deforestation results from removal of trees without sufficient reforestation,
and results in declines in habitat and biodiversity, wood for fuel and
industrial use, and quality of life. Forests disappear naturally as a result of
broad climate change, fire, hurricanes or other disturbances, however most
deforestation in the past 40,000 years has been anthropogenic. Human induced
deforestation may be accidental such as in the case of forests in
Afforestation is the
process of establishing a forest on land that is not a forest, or has not been
a forest for a long time by planting trees or their seeds. The term may also be
applied to the legal conversion of land into the status of royal forest.
The term reforestation generally refers to the reestablishment of the forest after its removal, or planting more trees for example from a timber harvest. Since the industrial revolution many countries have experienced centuries of deforestation, and some governments and non-governmental organizations directly engage in programs of afforestation to restore forests and assist in preservation of biodiversity.
An eco-balance refers to the consumption of energy and resources and the pollution caused by the production cycle of a given product. The product is followed throughout its entire life cycle, from the extraction of the raw materials, manufacturing and use, right through to recycling and final handling of waste.
· WHY WIND ENERGY
~Green clean power.
~No emission or hazardous waste.
~Carbon-di-oxide - neutral.
~No consumptions of fossil fuels.
~Low operating cost.
~Indigenous and inexhaustible.
· WIND AS ENERGY
~Fastest growing source of renewable energy in the world.
~Cleanest source of energy.
~Technology has developed dramatically.
~Low gestation period.
~Can be expanded in a short time span.
~Decentralised power generating station.
~Is competitive with conventional form of energy.
WIND REGIMES IN
INFLUENCE OF MONSOON CIRCULATIONS ON WIND CLIMATOLOGY:
~Best wind speed during the Southwest monsoon i.e. from May to September.
~Low wind speed during the Southwest monsoon i.e. from November to March.
An ecosystem is a community of living organisms living together with non-living components like soil, water, air and sunlight. It means the entire interacting system of organisms together with the environmental factors with which they interact is called ECOSYSTEM.