Question

1 minute speech about covid19

Answer 1

New scientists from the National Institutes of health (NLH) US, have come up with troubling new evidence of transmission in confined spaces. They used an intense sheet of highly sensitive laser light to visualize bursts of small - sized droplets produced during repeated spoken phrases. The droplets are too small to be seen, but are large enough to carry pathogens that can linger in the air "for ten of minutes or larger" before shrinking and eventually disappearing.

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