The document outlines the types and causes of pollution. It discusses several types of environmental pollutants including deposited matter, gases, acids, fluorides, metals, agrochemicals, complex organic substances, solid wastes, and radioactive waste. Air pollution is defined as an excessive concentration of foreign materials in the atmosphere that affects individual health. Water pollution is the degradation of water quality in a way that harms living things, and its causes include industrial waste, sewage, waste water, marine dumping, and accidental oil leakage. The document examines the effects of pollution and how to avoid increasing pollution levels.
3. OUTLINES
• INTRODUCTION
• TYPES OF POLLUTANTS
• TYPES OF POLLUTION
• EFFECTS OF POLLUTION
• CAUSES OF POLLUTION
• HOW TO AVOID POLLUTION
4. Pollution and pollutants.
• Pollution is an undesirable change in the
physical, chemical or biological characteristics
of air, water and soil that may harmfully affect
the life.
5. What are pollutants?
• Any substance which causes pollution is called
a pollutant.
A pollutant may be any chemical, geochemical
(dust,) substance or physical factor (heat) that is
released intentionally by man into the
environment in such a concentration that may
have adverse harmful or unpleasant effects
6. Environmental Pollutants:
• The various principal pollutants are as follow:
(1) Deposited matter – soot, smoke, tar, dust, grit etc.
(2) Gases – Oxides of nitrogen (NO, NO2), sulphur (SO2), carbon
monoxide, halogens, (chlorine, bromine, iodine),
(3) Acids droplets – sulphruric acid nitric acid etc.
(4) Fluorides
(5) Metals – Mercury, lead, iron, zinc, nickel, tin, cadmium,
chromium etc.
9. WHAT IS AIR POLLUTION?
• It is defined as the excessive concentration of foreign
material in the atmosphere,which affects the health
of individuals.
12. WATER POLLUTION
• Degradation of water quality in a manner
That has a harmful effect on any living thing
that drinks or use
14. Causes of water pollution
• Industrial waste
• Sewage and waste water
• Marine dumping
• Accidental Oil leakage
41. thankful to Almighty ALLAH Who
provided me this fabulous opportunity.
I am grateful to Dr. Aamna baloch for
her precious unassuming efforts,and we
are thankful to our classmates for
wonder Co-operation.