Pollution refers to the contamination of the natural environment such as air, water, and land by harmful substances added through human activities. Common pollutants include carbon monoxide, sulfur and nitrogen oxides, dust, smoke, sewage, and chemicals from manufacturing and fossil fuel combustion. Air pollution is caused primarily by vehicle emissions, power generation, and chemical production. Water pollution results from sewage, industrial activities like manufacturing, agriculture, and urban runoff. To reduce pollution, we should practice the 3Rs of reduce, reuse and recycle; use vehicles less; create public awareness; and enforce anti-pollution laws.

1. Pollution

2. What is pollution ?
The contamination of natural resources like air and
water,by addition of harmful (toxic and poisonous)
substances due to various human activities is called
pollution .
Any substance that causes pollution is called a
polutant.
Carbon monoxide,oxide of sulphur and
nitrogen,dust,smoke and sewage, are all pollutant.

3. CAUSES
OF
POLLUTION
Vehicle emissions, fuel oils and
natural gas to heat homes, by-
products of manufacturing and
power generation, particularly coal-
fueled power plants, and fumes
from chemical production are the
primary sources of human-made
air pollution.
Nature releases hazardous
substances into the air, such as
smoke from wildfires, which are
often caused by people; ash and
gases from volcanic eruptions; and
gases, like methane, which are
emitted from decomposing organic
matter in soils.

4. Air
Pollution

5. What
is
Air pollution ?
Air pollution refers to any physical,
chemical or biological change in the
air. It is the contamination of air by
harmful gases, dust and smoke
which affects plants, animals and
humans drastically.
There is a certain percentage of
gases present in the atmosphere.
An increase or decrease in the
composition of these gases is
harmful to survival. This imbalance
in the gaseous composition has
resulted in an increase in earth’s
temperature, which is known as
global warming.

6. Causes of air pollution .
The main cause of air pollution is the burning of
fossil fuels. Harmful gases like sulphur dioxide,
carbon monoxide etc. are released into the
atmosphere due to incomplete combustion of fossil
fuels which pollutes the air.
Air pollution is caused by solid and liquid particles
and certain gases that are suspended in the air.
These particles and gases can come from car and
truck exhaust, factories, dust, pollen, mold spores,
volcanoes and wildfires.

7. Water
Pollution

8. What
Is
Water pollution
?
Water pollution (or aquatic
pollution) is the contamination of
water bodies, usually as a result
of human activities, so that it
negatively affects its uses.[1]:6
Water bodies include lakes,
rivers, oceans, aquifers,
reservoirs and groundwater.
Water pollution results when
contaminants mix with these
water bodies. Contaminants can
come from one of four main
sources: sewage discharges,
industrial activities, agricultural
activities, and urban runoff
including stormwater

9. CAUSES OF WATER POLLUTION
The main water pollutants include bacteria, viruses,
parasites, fertilisers, pesticides, pharmaceutical
products, nitrates, phosphates, plastics, faecal waste
and even radioactive substances. These substances
do not always change the colour of the water,
meaning that they are often invisible pollutants.

10. How to prevent pollution
In this era of globalization, our mother earth is facing
serious pollution resulted from inconsiderable deeds of
mankind. Therefore, there are four ways to reduce
pollution on earth such as, practicing the 3Rs concept,
reduce the usage of vehicles on road, creating awareness
among citizens, and enforcing the laws.
The first way to reduce pollution is to practice the 3Rs
concept namely reduce, reuse and recycle. Citizens should
reduce the usage of air-conditioners as it will release
harmful gases , for instant ozone-depleting
chlorofluorocarbons which will result in reducing air
pollution.