Name one air-borne and a water borne disease in humans. List one specific symptom of each one of them.
Air-borne disease in humans-
Waterborne disease in humans-
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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