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प्रश्न
What are natural reasons for water pollution?
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उत्तर
The natural reasons of water pollution are:
- Presence of aquatic weeds which depletes the oxygen content of water bodies.
- Excessive algal growth.
- Mud and sludge which are added to water bodies due to river currents and their diversions.
- Growth of microbes like bacteria and fungi on dead and decaying matter present in water bodies.
संबंधित प्रश्न
Classify the given sources of water pollution as natural and manmade:
(1) domestic waste
(2) dead animals
(3) oil spills
(4) ashes released due to forest fires
Study the picture given below and answer the following questions :
Mention the impact of this pollution on human health.
Study the picture given below and answer the following questions :
What is a ‘Pollutant’ ? Explain the term.
Answer the following question:
Name two human diseases caused due to water pollution.
Fill in the Blanks:
Sewage is the source of ______ pollution
Usage of chemical pesticides and fertilisers causes ________ pollution.
Water pollution can spread ________ diseases in man.
Explain about oil spills.
BOD is measure of ______.
Study the picture given below and answer the question:
How does water get polluted?
