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INORGANIC POLLUTANTS
? They include fine particles of different metals, chlorides,
sulphates, oxides of iron, cadmium, acids and alkalies.

ORGANIC POLLUTANTS
? They Include oils, fats, phenols, organic acids grease and
several other organic compounds

AGRICULTURAL WASTES
? Chemical fertilizers and pesticides have
become essential for present day high
yielding crops.
? Consequently , they have become a
potential source of water pollution. These
fertilizers contain major plants nutrients
mainly nitrogen, phosphorous, and
potassium.
? Excess fertilizers may reach the ground
water by leaching or may be mixed with
surface water of rivers, lakes and ponds
by runoff and drainage.

MARINE POLLUTION
? Ocean are the final sink of all natural and manmade
pollutants. Rivers discharge their pollutants into the sea.
The sewage and garbage of costal cities are also dumped into
the sea. The other sources include, discharge of oils, grease,
detergents, and radioactive wastes from ships.

THERMAL POLLUTION
? Thermal Pollution of water is caused by the rise in
temperature of water. The main source of thermal pollution
are the thermal and nuclear power plants. The power
generating plants use water as coolants and release hot
water into the original source. Sudden rise in temperature
kills fish and other aquatic animals.

? Air pollution is the introduction of chemicals,
particulate matter, or biological materials that cause
harm or discomfort to humans or other living
organisms, or cause damage to the natural
environment or built environment, into the
atmosphere.
? A substance in the air that can cause harm to
humans and the environment is known as an air
pollutant.

CAUSES OF AIR POLLUTION
? Carbon dioxide-this happens because of
Deforestation and fossil fuel burning.
? Sulfur dioxide –Due to the burning of sulfur
containing compounds of fossil fuels.
? Sulfur oxides- very dangerous to humans at a
high concentration. Sulfur in the atmosphere is
responsible for acid rain.

CONSEQUENCES OF AIR POLLUTION
? CO2 is a good transmitter of sunlight, but it also
partially restricts infrared radiation going back
from the earth into space, which produces the so-
called greenhouse effect that prevents a drastic
cooling of the Earth during the night.
? CO2 in atmosphere --> GLOBAL WARMING

? Land pollution is the demolition of Earth's land
surfaces often caused by human activities and their
misuse of land resources. It occurs when waste is
not disposed properly.
? Urbanization and industrialization are major
causes of land pollution.

CAUSES OF LAND POLLUTION
?Four Main causes of land pollution:
? Construction
? Agriculture
? Domestic waste
? Industrial Waste

CONSTRUCTION
? Buildings take up resources and land, the trees are
chopped down and used to make buildings.
? Takes away the places for animals and other
organisms to live.

AGRICULTURE
? As there are more and more people inhabiting the
earth, food is in higher demand and so forests are
chopped down and turned into farmland
? In addition, herbicides, pesticides, artificial
fertilizers, animal manure are washed into the soil
and pollute it.

DOMESTIC WASTE
? Tons of domestic waste is dumped every day. Some waste
from homes, offices and industries can be recycled or
burnt in incinerators .
? There is still a lot of garbage, such as refrigerators and
washing machines that are dumped in landfills simply
because they cannot be reused in anyway, nor recycled .

INDUSTRIAL WASTE
? Plastics factories, chemical plants, oil refineries,
nuclear waste disposal activity, large animal farms,
coal-fired power plants, metals production factories
and other heavy industry all contribute to land
pollution.

? Noise pollution is excessive, displeasing human,
animal, or machine-created environmental noise
that disrupts the activity or balance of human or
animal life.
? Sound becomes undesirable when it disturbs the
normal activities such as working, sleeping, and
during conversations.
? World Health Organization stated that “Noise must
be recognized as a major threat to human well-
being”

SOURCES OF NOISE POLLUTION
? Transportation systems are the main source of noise
pollution in urban areas.
? Construction of buildings, highways, and streets cause a lot
of noise, due to the usage of air compressors, bulldozers,
loaders, dump trucks, and pavement breakers.
? Industrial noise also adds to the already unfavorable
state of noise pollution.
? Loud speakers, plumbing, boilers, generators, air
conditioners, fans, and vacuum cleaners add to the existing
noise pollution.

EFFECTS OF NOISE POLLUTION
? According to the USEPA, there are direct links between
noise and health. Also, noise pollution adversely affects the
lives of millions of people.
? Noise pollution can damage physiological and
psychological health.
? High blood pressure, stress related illness, sleep disruption,
hearing loss, and productivity loss are the problems related
to noise pollution.
? It can also cause memory loss, severe depression, and panic
attacks.

SOLUTIONS FOR NOISE POLLUTION
? Planting bushes and trees in and around sound
generating sources is an effective solution for noise
pollution.
? Regular servicing and tuning of automobiles can
effectively reduce the noise pollution
? Social awareness programs should be taken up to educate
the public about the causes and effects of noise pollution.
? Workers should be provided with equipments such as ear
plugs and earmuffs for hearing protection.

? Similar to automobiles, lubrication of the machinery
and servicing should be done to minimize noise
generation.
? Soundproof doors and windows can be installed to
block unwanted noise from outside.
? Regulations should be imposed to restrict the usage
of play loudspeakers in crowded areas and public
places.
? Factories and industries should be located far from
the residential areas.

WAYS TO STOP POLLUTION
? We believe that it is the responsible thing to do to
increase recycling.
? It is just like doing laundry and separating blacks and
colors.
? The residents of the country should also try and do
their part and put in at least one day of litter picking
up.

GLOBAL WARMING AND THE
GREENHOUSE EFFECT
Global Warming Greenhouse Effect

DIFFERENCE BETWEEN GLOBAL
WARMING AND THE GREENHOUSE
EFFECT
?Global warming refers to a rise in the
temperature of the surface of the earth.
?The Greenhouse Effect is a process by which
thermal radiation from a planetary surface is
absorbed by atmospheric greenhouse gases,
and is re-radiated in all directions.

SOME PROOF OF GLOBAL WARMING
PORTAGE GLACIER ALASKA
THEN….
PORTAGE GLACIER ALASKA
NOW….

COLORADO RIVER, AS OF
JUNE 2002
COLORADO RIVER, AS OF
DECEMBER 2003

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