Why do you think the the video uses and animation and song?
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A. To scare children of the threat posed by the atom bomb.
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B. To make the atom bomb seem very scary
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c. To make the atom bomb seem very dangerous
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D. To make the atom bomb seem not so bad.

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.