Question

Discuss various levels of cause of diseases

Answer 1

Disease can be caused by microbes which entered our body through food ,air ,water physical contact etc.
various levels can be
cholera ,tuberculosis ,AIDS ,antibiotics.
actually i have also searched this answer a month ago

Answer 2

Disease caused by Protozoa are malaria.
Disease caused by Viruses are influenza, jaundice/hepatitis, rabies(hydrophobia), AIDS, polio.
Disease caused by Bacteria are tuberculosis (T.B), cholera, typhoid, diarrhoea, peptic ulcers.