48 hours<span>Most plaque hardens within 48 hours of formation, and within several days it will become so hard that it is almost impossible to remove. This hard substance is tartar and the only way to remove it is to see your dentist for a professional scraping of your teeth.
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Answer:
Your answer would be D :)
Explanation:
Answer:
cpr is important to us because it saves a life,you should use cpr when someone is not breathing or drowns the difference between infant cpr is you use 2 fingers on a infant and two hands on a adult
Explanation:
that is the answer
I think it would either be A or D! Hope this helps.
