Which disease has been completely eradicated through the immunization program?

The germ theory of disease was put forth by

Which of the following is an example of a physiological barrier in the human body?

When were Fleming,Chain,and Florey awarded the Nobel Prize for their research?

Mention the factors affecting health.

Assertion: Thick cuticle is mostly present in disease-resistant plants.
Reason: Disease-causing agents cannot grow on cuticle and cannot invade the cuticle.