What is Water Pollution?
AChanges in water temperature.
BHarmful changes in the physical, chemical, and biological properties of water.
CAn increase in the water level.
DThe presence of aquatic plants in water.
AChanges in water temperature.
BHarmful changes in the physical, chemical, and biological properties of water.
CAn increase in the water level.
DThe presence of aquatic plants in water.
Related Questions:
Which districts does the Periyar river flow through?
Which of the following statements about the Chalakudy River is correct?