The wear-and-tear theory of aging is weakened by the fact that
the human body cannot repair itself.
many parts of the body wear out from use.
the human body is able to repair damaged areas.
machines cannot grow old.
the human body is able to repair damaged areas.
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Anneli's 4-year-old daughter manipulates sounds within words and enjoys rhyming games. Anneli's daughter is demonstrating
A) phonological awareness. B) metacognition. C) private speech. D) knowledge of cardinality.
Children of immigrant parents who moved from a country in which nutrition was inadequate often grow up to be taller than their parents. But the taller parents among the immigrant group tend to have taller children. This indicates that ____________
a. height is not heritable b. the expression of genes depends partly on environment c. eating adequate amounts of food is a strong genetic trait d. without adequate nutrition, genes tend not to express at all