Blood exchanges carbon dioxide for oxygen in the C.) Alveoli.
The average weight of a fully grown heart is around 8-10 ounces usually depending on your gender.
The correct answer should be an offshore life jacket.
You should always have a certain type of PFD (personal flotation device) on your boat because it may happen that it can sink and then you are doomed if you don't have something to help you such as a PFD.
Answer:
Put things away after you use them.
Explanation:
self explanatory
