19,916
edits
Changes
no edit summary
| style="height:20px; width:400px; text-align:center;" |The percentage of different gases found in [[exhale]]d air.
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Breathing, pages 23, 60-61, 136-137, GCSE Biology; Third Edition, Oxford University Press, AQA '']