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ankoles [38]
3 years ago
15

Why does a mask have to cover both your nose and mouth to be effective explain using the Respiratory tract

Biology
1 answer:
dusya [7]3 years ago
3 0

Your nose and your mouth are both a portal of entry into your body. If you cover one and not the other it defeats the purpose because Bacteria can still enter the system. They are both part of your respiratory system.

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Please help with this question !
klio [65]

DNA - Option C.

Gene - Option A.

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<h3><u>Explanation:</u></h3>

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Andreyy89
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To which of the same groups do the raccoon and the guinea pig belong
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the questionnaire is incomplete, the graph with the options is attached

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1.

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