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Subjects
Science CBSE
Class 9
Why do we fall ill?
Textbook questions
37.
Intext questions VII
Exercise condition:
4
m.
What are the different means by which infectious diseases are spread?
a
. Through Air:
b
. Through water:
c
. Physical contact:
d
. Through vectors:
Answer variants:
Cholera and typhoid
Malaria and chikungunya
AIDS and syphilis
Common cold and pneumonia
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