Question

malaria was on the outbreak in a locality of a town people thought that the bite of mosquito causes malaria and started killing mosquitos. Anita told the masses to clean the breeding grounds of mosquitoes to add oil on the water bodies and clean all the areas where stagnant water was present . malaria is a disease caused by a parasite . the parasite is transmitted to humans through the bites of infected mosquitoes . people who have malaria usually feel very sick , with malaria , and about 440,000 people die from the disease.



(i) we add oil in water bodies because ​

Answer 1

Answer:

we add oil in water bodies because it decrease surface tension of water so mosquito can't breed in water now as density of oil is less than water so you must have seen floating oil on water . this makes difficult for mosquito to lay eggs in stagnant water and thus they lost a breeding place which can significantly decrease malaria causing carrier mosquito