Advertisements
Advertisements
प्रश्न
What will happen when oil is spread on the water?
Advertisements
उत्तर
The thin film of oil on water prevents oxygen supply to eggs and larvae of mosquitoes and thus they are killed.
APPEARS IN
संबंधित प्रश्न
What problems did they have on having malaria?
In which season is malaria more common? Why do you think this happens?
What do you do in your house to protect yourself from mosquitoes? Also find out from your friends about what they do.
Ask a doctor or elders about the food items which contain iron.
Who do you think puts up such posters, or gives ads in the newspapers?
Why do you think it talks about putting fish in the tank? What do you think the fish eats?
Who is responsible for keeping these places clean?
In your group, make a poster with a message to keep the cooler, tank, drains and the area clean (wherever water collects). Put up your poster in and around your school.
Find out who is responsible for keeping the area around your school clean. Write a letter from your class, reporting your findings and suggestions. Find out to whom the letter should be written and to which office it should be sent.
Is there a pond or river around your house or school? Go and look around and observe these things:
Do you think these were planted by someone or did they grow on their own?
