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Author Question: Which of the following cannot be determined from the spectrum of a star? a. chemical composition ... (Read 31 times) |
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Illicit drug use costs the United States approximately $181 billion every year.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.