Could you become rich selling rocks? Gary Dah did. He was one of the greatest marketers of the 20th century. In 1975, he launched what should have been a worthless product-pet rocks. These
pet rocks became a fad phenomenon, turning Dahl into a millionaire. How? He relied on his
copywriting skills to turn the rocks into gag gifts. They were packaged with a manual explaining
how to care for the rocks and a pile a soft shavings, as if the rocks might leave waste behind.
Through his marketing efforts he was able to turn a worthless pile of rocks into a lifechanging
amount of money. While advertising and copywriting have become more sophisticated over the
years, Dahl's achievement remains impressive.
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Proofread the passage and identify the spelling and punctuation errors. no one knows the exect cause of diabetes. most people who get type 2 diabetes are older, but now younger people are being diagnosed with it. like many young people, you are probably thinking, "why should i be concerned about diabetes? " the truth is that both the center for disease control and the american diabetes association are quite alarmed about the increase in type 2 diabetes among young people. information gathered in the 1990s showed a rapid increase in type 2 diabetes in children. during the 2000s, this trend is continue. scientists who study diabetes are finding that 85 percent of the children who are diagnosed with type 2 diabetes are overweight. but that is just one reason for the increase. children are at risk for type 2 diabetes if they are inactive, have a family history of diabetes, or are from african american, american indian, or asian american families.

Reread paragraph 1 of “welcome to ‘rise of the knights.’” which word from the paragraph does not create a tone of enthusiasm?

What is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ.