<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!
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The antonym is D. Reckless because cautious is to be very careful about your thoughts and actions. Reckless is completely insane. Your Welcome:)
Answer:
The broad topic would be Communication Through the Ages. Early Kingdoms narrows it down to West Africa. A short research project could give you the info you need on USGrant. The Mid Atlantic States are such a small portion that when you study colonization, it can be narrowed down to each colony. Communiciation Through the Ages - is just that - a long time and a very broad subject. From when to when?
Explanation:
It would take a while to research all the different types of communication - and is it narrowed down to technology or can it go back even to the stone age and how people drew pictures to communicate???
