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:
the center of gravity will shift
Explanation:
Every single body and thus the athletes themselves, is made up of individual components each of which has its own weight. ... So if the same body is to take a different shape, the position of the center of gravity will shift. An athlete that bends his/her legs will lower his/her center of gravity position.
Don't take the aggressive actions of other drivers personally.
Answer:
Allows for the breathing in of oxygen. Removes carbon dioxide from the body.
Explanation:
When you inhale in you get oxygen from the air and it goes into your blood. Right at the same time carbon dioxide comes out of your blood into, goes into your lungs and gets exhaled.
