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प्रश्न
What will happen when oil is spread on the water?
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उत्तर
The thin film of oil on water prevents oxygen supply to eggs and larvae of mosquitoes and thus they are killed.
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संबंधित प्रश्न
How did they find out that they had malaria?
What other diseases can be caused by mosquito bites?
Look at the report of the blood test given here. Which words in the report help us to know that the person has malaria?
Have you seen any poster like this put up anywhere?
Why do you think it talks about putting fish in the tank? What do you think the fish eats?
Since how many days has water collected there?
Who is responsible for keeping these places clean?
How can you find out if someone has malaria?
What was found out by the blood test?
Is there a pond or river around your house or school? Go and look around and observe these things:
What else can you see in the water? Make a list.
