Answer:
The authors purpose is to inform you about caffeine.
Explanation:
I hope this helps :)
<span>If you hold your breath, <span>carbon dioxide </span></span><span>builds up in your blood
The reason for this is:
When you exhale or breathe out, you exert or let out carbon dioxide. So, if you were to hold your breath, it would build up because it is not being exerted.
Hope this helped you!
</span>
Answer:
D
Explanation:
Composition is used to describe how something is made/ what something Is made of.
