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प्रश्न
The most common carrier of communicable diseases is ___________.
विकल्प
ant
housefly
dragonfly
spider
उत्तर
The most common carrier of communicable diseases is housefly.
Explanation:
The disease-causing bacteria require a carrier for transmission. Houseflies are common carriers of infectious diseases. Pathogenic bacteria attach to the bodies of flies that feed on rubbish and animal excrement. When these flies sit on food, they transfer bacteria to it, making the person who consumes the contaminated food sick.
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