Answer:
Being the first level, the simplest and the fourth, the most complex, are organized like this:
1. Acts: represented by concrete actions.
2. Habits: represented by grouping of acts.
3. Traits: represented by association of related habits.
4. Types: represented by trait association.
Answer:
True. (A) The statement is ture.
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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