Global warming is the current increase in temperature of the Earth’s surface (both land and water) as well as its atmosphere.Average temperatures around the world have risen by 0.75ºC (1.4ºF) over the last 100 years. About two thirds of this increase has occurred since 1975.Carbondioxide,methane,Chlorofluoro Carbon, nitrous oxides are the green house gases warming the Earth’s surface. So it is also called green house effect. The CO2 is the most important of the green house gases contributing to 50% of global warming. The burning of Fossil fuel, and other biomass, deforestation result in CO2. In the past, when the Earth experienced increases in temperature itwas the result of natural causes but today it is being caused by human activities.
Global warming adversely affects
agriculture, horticulture and eco system.
Reduced rainfall, higher temperature and increased pest/weed growth hamper farming. Threats to health arise due to increase in disease carrying vectors such as mosquitoes resulting in malaria, dengue fever, encephalitis and yellow fever.An increase in the global average surface air temperature of such magnitude will bring about alarming changes in rainfall patterns and other climatic
conditions, resulting in serious ecological
The climate change refers to seasonal
changes over a long period with respect to
the growing accumulation of greenhouse
gases in the atmosphere. Recent studies
have shown that human activities since
the beginning of the industrial revolution have contributed to an increase in the
concentration of carbon dioxide in the
atmosphere by as much as 40%, from about
280 parts per million in the pre-industrial
period, to 402 parts per million in 2016,
which in turn has led to global warming.
Several parts of the world have already experienced the warming of coastal waters, high temperatures, a marked change in rainfall patterns, and an increased intensity and frequency of storms. Sea levels and temperatures are expected to be rising.
Acid rain is one of the consequences of air pollution. It occurs when emissions from factories, cars or heating boilers contact with the water in the atmosphere.These emissions contain nitrogen oxides,sulphur dioxide and sulphur trioxide which when mixed with water becomes sulfurous acid, nitric acid and sulfuric acid. This process also occurs by nature through volcanic eruptions.It can have harmful effects on plants, aquatic animals
Electronic waste which is commonly
referred as “e-waste” is the new byproduct
of the Info Tech society. It is a physical waste
in the form of old discarded, end of life
electronics. It includes a broad and growing
range of electronic devices from large
household appliances such as refrigerators,
air conditioners, cellular phones, computers
and other electronic goods”. Similarly, e-waste
can be defined as the result when consumer,
business and household devices are disposed
or sent for re-cycling (example, television,
computers, audio-equipments, VCR, DVD,
telephone, Fax, Xerox machines, wireless
devices, video games, other household
Solid Waste is basically discharge of
useless and unwarranted materials as a result of human activity. Most commonly,they are composed of solids, semisolids or liquids. Solid wastes consist of the discards of households, hospital refuse, dead animals,
debris from construction site, ashes, agricultural wastes and industrial wastes etc.
When waste is not removed from the streets
and public places in time it poses severe
public-health and hygiene hazards.