#disease_type
#science_9th
#whydowefallill
#cbse exams
#ncertbiology
#human health
#communicablediseases
#noncommunicable diseases
#mode of spread 9th biology
#acquired diseases
#inherited diseases
#9th biology
#term2 exams 2021-22
#science_9th
#whydowefallill
#cbse exams
#ncertbiology
#human health
#communicablediseases
#noncommunicable diseases
#mode of spread 9th biology
#acquired diseases
#inherited diseases
#9th biology
#term2 exams 2021-22
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