GLOSSARY
| Water pollution
|
undesirable change occurring in water |
Sedimentation
|
settling of suspended particles at the bottom |
Eutrophication
|
increased productivity of lakes and ponds brought about by nutrient enrichment |
Siltation
|
deposition of silt in gills of fishes |
Retting |
decaying coconut husk to get fibre for making coir |
|