Question

how can we prevent malaria ?

Answer 1

drain all the standing water.
cleaning our surroundings which we are living in.
covering the bin every time after the use so that mosquitoes cannot me take birth.
keeping the surroundings clean.

Hope this helps. :)

Answer 2

1) keep your surrounding clean
2) we should put kerosene or petrol in stagnant water
3) check if there is no stagnant water