Question

Give the reason.
It is advised not to eat out or uncovere food items
We should put kerosene oil in fountains, water cooler, etc where there is
stagnant water).
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Answer 1

Answer:

1. due to exposure to atmosphere there may be the chance for microbes to sit on food and they release some toxic substances
2. kerosene oil prevents the breeding of mosquitoes that spread various diseases like malaria.