ScienceClass 7CBSE
Q
Water polluted by various human activities causes a number of water-borne diseases. Which of the following is not a waterborne disease? (a) Cholera (b) Typhoid (c) Asthma (d) Dysentry
A
Soln:
The answer is (c) Asthma
Explanation:
Asthma is airborne disease whereas Cholera, Typhoid and dysentery are spread by contaminated water and food.