Question

i need the answer for all of the question I will make them brain

Answer 1

(a). sufficient and proper food are necessary as food free from contamination of pathogens will lead to good health and food is main source by which we get all our energy requirements so sufficient food should be taken.

(b).exposure is main cause for disease.if food is not protected properly vectors of certain diseases will spoil the food tht can lead to certain infectious diseases
so prevention of exposure is related to preventing infection..