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17. Why is alr important for us?
18. What are airborne diseases? How are they caused?​

User Craigo
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Airborne diseases are caused by pathogenic microbes small enough to be discharged from an infected person via coughing, sneezing, laughing and close personal contact or aerosolization of the microbe.
User Shay Anderson
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Answer:

17: air is important to us because people need to breathe, and so do lots of other animals and plants.

Step-by-step explanation:

User JP Kim
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