They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).
Answer from: Quest
what is the question?
Another question on Chemistry
Chemistry, 22.06.2019 02:30
You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap
What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers