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Lot Of Mental Wear: Grass is coarse, and since it may be dusty or sandy, it is extremely abrasive. To compensate for wear, the teeth of the young adult horse are in the form of tall columns that go far into the jawbones before branching into short roots. As the teeth wear down, they continue to erupt, or emerge, from the gums, until in old age the roots are just below the surface of the gums. Each tooth can wear down 1 to 2 inches (2.5-5.0 cm) without losing its food-grinding ability.
PASSPORT FACTS, by which I mean the number of your pass and its date and place of issuance, should be memorized early in trip. It saves a lot of mental wear and tear and perhaps physical hust in search of the precious document if you know its basic facts by he If you haven't been abroad before, you'll be surprised at the number j times and places these facts must be recorded. You always have to:' elude them in hotel registrations, which are ponderous affairs on Continent.
Mass investigations on the basis of age norms, however, have indicated only a slight relation between the mental and physical status of children. A spurt in mental growth does not appear to parallel the preadolescent spurt in physical growth. The pattern of mental development is similar in boys and girls, despite the difference in their rates of physical maturing.
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