Answer:
False
Explanation:
The cardia is at the upper opening of the stomach, where the esophagus enters.
Answer:
A, because it generates speech
Explanation:
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.
</span>
