CBSE Class 8 Answered

We can prevent the spreading of diseases like malaria and dengue caused by mosquitoes in the following ways:

(i) All the mosquitoes breed in water. So, the pools of stagnant water around the houses should be drained out so that mosquitoes may not breed in them.

(ii) The windows and doors of the house should have fine iron wire mesh so that mosquitoes cannot enter the house.

(iii) Insecticides should be sprayed in houses periodically to kill mosquitoes.

(iv) Oil should be sprayed on the surface of water in dirty water drains to kill the larvae of mosquitoes.

(v) Mosquito repellant cream should be applied on the exposed parts of the body before sleeping at night. Mosquito repellant devices can also be used.