Our skin makes vitamin D when it is exposed to sunlight. Vitamin D helps the body take in calcium, which keeps bones strong. What does vitamin D help the body do?
- ATake in calcium
- BGrow more hair
- CFight off colds
- DDigest sugar
Our skin makes vitamin D when it is exposed to sunlight. Vitamin D helps the body take in calcium, which keeps bones strong. What does vitamin D help the body do?
A school lunch menu shows: Monday – pasta; Tuesday – tacos; Wednesday – soup and salad; Thursday – fish; Friday – pizza. On which day is fish served?
The Great Wall of China is not a single wall. It is a series of walls built over many centuries by different rulers to protect against invasions. Why was the Great Wall built?
“The nurse checked the patient’s wristband, asked his name and date of birth, and compared them with the medicine order before giving the tablet.” Why did the nurse most likely do these checks?
“Remember to take your medicine,” Mr. Okafor’s daughter called as she left. He nodded, but an hour later the pill was still on the kitchen table next to his untouched glass of water. What can you infer?
“When you have a cold, the lining of your nose swells and makes more mucus. This is why your nose feels blocked.” What causes the blocked feeling in your nose?
“The children’s faces fell when the teacher announced that the zoo trip had been cancelled. Then she smiled and said, ‘Instead, the zoo is coming to us!’” How do the children’s feelings most likely change?
“Researchers gave half of a group of volunteers a new vitamin and the other half a dummy pill. Neither the volunteers nor the researchers knew who got which until the end.” Why did the researchers keep this secret?
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