Question

Overcrowded and poorly ventilated housing is a major factor in the spread of air borne diseases.explain

Answer 1

Overcrowding leads to too much suffocation nd poorly ventilated housing does not allow the air to enter the house in an appropriate nd sufficient manner... That's why these both r the major factors in spreading of air borne diseases..

Answer 2

Poor ventilated houses make more and more polluted air.Polluted air are the carrier of air borne diseases.