Why is miosis important in providing airation in living things?
Since this is not my area of expertise, I searched Google under the key words "meiosis" to get these possible sources:
http://en.wikipedia.org/wiki/Meiosis
http://www.biology.arizona.edu/CELL_BIO/tutorials/meiosis/main.html
http://www.accessexcellence.org/RC/VL/GG/meiosis.html
http://www.johnkyrk.com/meiosis.html
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Meiosis.html
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.