Can someone help me paraphrase these paragraphs. Please no dumb answers, I really need help.?

bicycle helmets reduce head injuries by what percent image

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1. "The Antarctic is the vast source of cold on our planet, just as the sun is the source of our heat, and it exerts tremendous control on our climate," [Jacques] Cousteau told the camera. "The cold ocean water around Antarctica flows north to mix with warmer water from the tropics, and its upwellings help to cool both the surface water and our atmosphere. Yet the fragility of this regulating system is now threatened by human activity." From "Captain Cousteau," Audubon (May 1990):17.

2. Of the more than 1000 bicycling deaths each year, three-fourths are caused by head injuries. Half of those killed are school-age children. One study concluded that wearing a bike helmet can reduce the risk of head injury by 85 percent. In an accident, a bike helmet absorbes the shock and cushions the head. From "Bike Helmets: Unused Lifesavers," Consumer Reports (May 1990): 384.

3. While the Sears tower is arguably the greatest achievement in skyscraper engineering so far, it's unlikely that architects and engineers have abandoned the quest for the world's tallest building. The question is : Just how high can a building go? Structural engineer William LeMessurier has designed a skyscraper nearly one-half mile high, twice as tall as the Sears Tower. And architect Robert Sobel claims that existing technology could produce a 500-story building. From Ron Bachman, "Reaching for the Sky." Dial(May 1990): 15.

Answer
1. The Antarctic is very cold on our planet. The sun has a lot of control with our climate. The water around Antarctica goes north and mixes with warmer water, and it helps cool our surface water and atmosphere. This system is fragile.

2. Three-fourths of bicycle deaths are caused by head injuries. Half were school kids. Wearing a helmet can reduce injury to the head. A helmet cushions the head in an accident.

3. The Sears tower is possibly the best achievement in skyscraper engineering. A structural engineer has made a skyscraper about one and a half mile tall. That's twice as tall as the sears tower.

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Title Post: Can someone help me paraphrase these paragraphs. Please no dumb answers, I really need help.?
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