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प्रश्न
What could be the reasons of air pollution?
उत्तर
Some natural events may also cause air pollution. E.g., Cyclones. volcanic eruptions. strong winds. But air pollution is caused to a greater extent by human activities. E.g., the burning of fossil fuel. the toxic gases and particles. etc. emitted from industries and during transport.
संबंधित प्रश्न
State any two harmful effects of noise pollution on human health.
Name the following :
One gaseous compound which depletes the ozone layer.
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates
Polythene bag, Crop residue, Animal waste, Decaying vegetable.
Give two examples of each of water, soil and air pollution from your residential area.
Classify the following pollutions into natural and man-made categories.
Sewage, dust, pollen grains, chemical fertilizers, vehicular smoke, algae, pesticides, waste of animals and birds.
True or False:
The average home creates more pollution then does the average car.
What are primary pollutants?
Give the difference between natural and man-made pollutants.
Match the following:
| i. | Burning coal | a. | Land pollution |
| ii. | Throwing plastic | b. | Noise pollution |
| iii. | Wastewater from factories is mixed with river | c. | Air pollution |
| iv. | Louder horn of vehicle | d. | Water pollution |
How can we reduce land pollution?
