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Author Question: Which concept reflects the general idea that challenge is important for cognitive development? a. ... (Read 152 times) |
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.