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?
- AFight off colds
- BGrow more hair
- CTake in calcium
- 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?
The giant panda eats mostly bamboo. An adult can spend up to 14 hours a day eating, because bamboo provides little energy. Pandas live in mountain forests in central China. Why do pandas spend so many hours eating?
Recycling paper saves trees and energy. Making new paper from recycled paper uses less water than making it from wood. Many towns collect paper for recycling once a week. What is the passage mostly about?
“The storm knocked down power lines across the county. Schools closed, and many families spent the night by candlelight.” What was the effect of the fallen power lines?
Kelp is a type of large brown algae that grows in cold ocean water. Kelp forests provide food and shelter for many animals, including sea otters, which eat the sea urchins that feed on kelp. How do sea otters help kelp forests?
“When you exercise in hot weather, your body sweats to cool down. If you do not replace the lost fluid, you can become dehydrated, which may cause dizziness and headaches.” What is the main point of the passage?
“Many patients feel nervous before surgery. Nurses can help by explaining what will happen, answering questions and letting patients know that their feelings are normal.” What is the author’s purpose?
“The kettle whistled, but Sarah did not move. She was staring at the letter in her hands, reading the same line again and again.” What can you infer?
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