Question

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

Answer 1

Answer:

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

Explanation:

Answer 2

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.