(a) How do houseflies carry disease-causing microbes (or pathogens)?
(b) State any two ways of preventing disease spread by houseflies.
(a) How do mosquitoes carry disease-causing micro-organisms and spread diseases?
(b) Mention any three ways of preventing diseases spread by mosquitoes.
(a) Name any five human diseases caused by micro-organisms.Also name the causative micro-organisms and mode of transmission for each of these diseases.
(b) State the various ways of preventing the occurrence and spreading of communicalbe disease.