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year 10 exam revision

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Question:

The nose defends against pathogens by having _______ _____ which act as a ________ _______ to _________. _____ in the nose _______ _____ which _____ _________ before they can _____ the _____.

Author: Ruthgreen_6



Answer:

Internal hairs physical barrier infection cells produce mucus traps pathogens enter lungs


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