LEARN CHEMISTRY- GRADE 8

1. INTRODUC
TION
 THERE ARE MANY TYPES OF POLLUTIONS
SUCH AS SOIL POLLUTION, WATER
POLLUTION,AIR POLLUTION, PLASTIC
POLLUTION ETC:-.BUT IN THIS SESSION WE
ARE GOING TO LEARN ABOUT

2. WATERPOLLUTION
DONE BY:VARUN SANTHOSH- VIII-E
LETS BEGIN

3. ABOUTWATER
POLLUTION
 The contamination of water with harmful, unwanted
substances like domestic sewage, toxic industrial
wastes, chemicals like pesticides and fertilizers which
causes harmful effects on both living organisms and
non-living objects is called water pollution.
BEFORE GOING INTO DETAIL
LETS WATCH A VIDEO!!!

5. CAUSES OF
WATER
POLLUTION
 INDUSTRIAL SEWAGE
 DOMESTIC SEWAGE
 HUMAN ACTIVITIES
 AGRICULTURAL WASTES
 OIL SPILLS

6. EFFECTS
OF WATER
POLLUTION
 EFFECTS ON HUMAN HEALTH
 EUTROPHICATION
 BIOLOGICAL MAGNIFICATION
 EFFECTS ON AQUATIC LIFE

7. CANUSTATESOM
PREVENTIVE
MEASURESTOAVOID
WATERPOLLUTION??
 PAGE NUMBER 271 IN SCIENCE TB

8. SOGUYSWHATU
HAVELEARNED
LETSSUMMARISE
 TYPES OF POLLUTIONS
 WATER POLLUTION
 CAUSES OF WATER POLLUTION
 EFFECTS OF WATER POLLUTION
 METHODS OF PREVENTION TO AVOID WATER
POLLUTION