Environmental pollution occurs when materials or energy are discharged into the environment in a way that causes harm. It can have both direct and indirect negative impacts on ecosystems. Tropospheric pollution exists in the air in both gaseous and particulate forms from sources like vehicle emissions, industrial pollution, and natural events. Common gaseous pollutants are oxides of sulfur, nitrogen, and carbon which can cause respiratory issues. Particulate matter includes dust, smoke, and liquid droplets. Global warming is caused by the greenhouse effect trapping heat from carbon dioxide and methane in the atmosphere. Acid rain occurs when rainwater falls and reacts with air pollutants like sulfur and nitrogen oxides, lowering its pH and damaging

2. ENVIRONMENTAL POLLUTION
Environmental pollution is any discharge of material
or energy into water, land, or air that causes or
may cause acute (short-term) or chronic (long-
term) detriment to the Earth's ecological balance
or that lowers the quality of life. Pollutants may
cause primary damage, with direct identifiable
impact on the environment, or secondary damage
in the form of minor perturbations in the delicate
balance of the biological food web that are
detectable only over long time periods.

3. TROPOSPHERIC POLLUTION
IT occurs due to the presence of undesirable solid or gaseous particles in air.
GASEOUS AIR POLLUTANTS- OXIDES OF SULPHUR NITROGEN , AND
CARBON, HYDROGEN SULPHIDE , HYDROCARBONS, OZONE AND OTHER OXIDANTS
OXIDES OF NITROGEN- AT HIGH ALTITUDES WHEN
LIGHTNING STRIKES DINITROGEN AND DIOXYGEN
COMBINE TO FORM OXIDES OF NITROGEN THE
IRRITANT RED HAZE IN TRAFFIC AND CONGESTED
PLACES IS DUE TO OXIDES OF NITROGEN
OXIDES OF SULPHUR- oxides of sulphur
are produced when sulphur containing
fossil fuel is burnt . It causes respiratory
problems
OXIDES OF CARBON-HYDROCARBONS AND
CARBON MONOXIDE . HYDROCARBONS ARE
FORMED DUE TO INCOMPLETE COMBUSTION
OF FOSSIL FUELS . CARBON MONOXIDE IS
HIGHLY POISNOUS TO HUMAN BEINGS

4. TROPOSPHERIC POLLUTION
PARTICULATE POLLUTANTS ARE- DUST, MIST, FUMES, SMOKE
SMOKE PARTICULATES CONSISTS OF SOLID OR
MIXTURE OF SOLID AND LIQUID . THEST ARE
DURING COMBUSTION OF ORGANIC MATTER
AND FOSSIL SUELS
DUST IS COMPOSED OF FINE SOLID PARTICLES
OVER 1UM IN DIAMETER , PRODUCED DURING
CRUSHING GRINDING AND ATTRIBUTION OF
SOLID MATERIALS .
MISTS- ARE PRODUCED BY PARTICELS
OF SPRAY LIQUIDS AND BY
CONDENSATION OF VAPOURS IN AIR

5. GLOBAL WARMING
GREEN HOUSE EFFECT

6. ACID RAIN WE ARE AWARE THAT NORMAL RAIN WATER HAS PH OF 5.6
DUE TO PRESENCE OF H+ IONS FORMED BY REACTION OF
RAIN WATER WITH CARBON WHEN PH OF RAIN WATER
DROPS BELOW 5.6 IT IS CALLED ACID RAIN
TAJ MAHAL AND ACID RAIN
THE AIR ARROUND THE CITY OF AGRA WHERE THE TAJ MAHAL
IS LOCATED CONTAINS FAIRLY HIGH LEVELS OF SULPHUR AND
NITROGEN OXIDES IT IS MAINLY DUE TO LARGE NUMBER OF
INDUSTRAIL POWER PLANTS ARROUND THE CITY THE RESULTING
ACID RAIN REACTS WITH THE MARBLE OF THE MONUMENT WHICH
IS GETTING DISCOLOURED

7. STRATOSPHERIC POLLUTION
THE UPPER STRATOSPHERE CONSISITS OF
CONSIDERABLE AMOUNT OF OZONE
WHICH PROTECTS US FROM HARMFUL
ULTRA VIOLET RAYS
The ozone hole is an annual thinning of the ozone layer over
Antartica caused by stratospheric chlorine Other more
moderate thinning have also been called "ozone holes", such as
that over the North Pole during certain weather conditions.
The discovery of the annual depletion of ozone above the
Antarctic was first announced in a paper by Joe Farman, Brian
Gardiner and Jonathan Shanklin which appeared in nature in
may 1985 .Due to thinning of ozone hole uv rays could reach
the earth’s surface and cause skin cancer

8. WATER POLLUTION
Water pollution is the contamination of water bodies
(e.g. lakes, rivers, oceans, aquifers and groundwater).
Water pollution occurs when pollutants are
discharged directly or indirectly into water bodies
without adequate treatment to remove harmful
compounds.
MAIN CAUSES OF WATER POLLUTION ARE
PATHOGENS , ORGANIC WASTE AND
CHEMICAL POLLUTANTS
PATHOGENS INLCLUDE DISEASE CAUSING BACTERIA LIKE
STREPTOCOCCUS FAECALIS AND MANY MORE
AS WE KNOW WATER IS AN EXCELLENT SOLVENT
MANY INORGANIC SOLVENTS LIKE THEY INCLUDE
MERCURY CADIUM

9. SOIL POLLUTION
Soil contamination or soil pollution is caused by the presence of xenobiotic (human-made)
chemicals or other alteration in the natural soil environment. It is typically caused by
industrial activity, agricultural chemicals, or improper disposal of waste. The most common
chemicals involved are petroleum hydrocarbons, polynuclear aromatic hydrocarbons (such as
naphthalene and benzo(a)pyrene), solvents, pesticides, lead, and other heavy metals.
Contamination is correlated with the degree of industrialization and intensity of chemical
usage.
MAIN CAUSES OF SOIL
POLLUTION ARE PESTICIDES
AND INDUSTRIAL WASTE

10. A PESTICIDE is a substance or mixture of substances used to kill a pest. A pesticide may
be a chemical substance, biological agent (such as a virus or bacteria), antimicrobial,
disinfectant or device used against any pest. Pests include insects, plant pathogens,
weeds, mollusks, birds, mammals, fish, nematodes (roundworms) and microbes that
compete with humans for food, destroy property, spread or are a vector for disease or
cause a nuisance
Treated sewage sludge, known in the industry as bio
solids, has become controversial as a fertilizer to the
land. As it is the byproduct of sewage treatment, it
generally contains more contaminants such as
organisms, pesticides, and heavy metals than other
soil.

11. GREEN CHEMISTRY
Green chemistry, also called sustainable chemistry, is a philosophy of chemical
research and engineering that encourages the design of products and processes
that minimize the use and generation of hazardous substances .
Whereas environmental chemistry is the chemistry of the natural environment,
and of pollutant chemicals in nature, green chemistry seeks to reduce and
prevent pollution at its source.

12. NOBEL GOES TO GRREN CHEMISTRY
What a great day for chemistry,'' declared an advocate of environmentally friendly
"green chemistry,'' Paul Anastas of the American Chemical Society.
The $1.3 million prize will be shared by Robert H. Grubbs, 63, of the California Institute
of Technology; Richard R. Schrock, 60, of the Massachusetts Institute of
Technology, and Yves Chauvin, 74, honorary director of research at the Institut
Francais du Petrole in Rueil-Malmaison, France.
Yves Chauvin Robert H.Grubbs Richard R.schrock