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Masks are a key measure to suppress transmission and save lives. These masks are intended for industrial workers to prevent dust and particles from being breathed in as the valve closes on inhale. However, the valve opens on exhale, making it easier to breathe but also allowing any virus to pass through the valve opening. This makes the mask ineffective at preventing the spread of the virus or any other respiratory virus.
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His father was certified as an a Val Val he was in wwyw with the same name and he had no nada and he had
Megan hiked 2.4 miles each hour.
Divide the total number of miles hiked (15.12) by the total hours (6.3).
15.12/6.3 = 2.4