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
- BTake in calcium
- CDigest sugar
- DGrow more hair
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?
Ben woke up late. He jumped out of bed, put on his clothes and ran to the bus stop without eating. Why did Ben not eat breakfast?
Sharks have lived in the oceans for millions of years. Unlike most fish, their skeletons are made of cartilage, the same bendy material found in your nose and ears. What are shark skeletons made of?
“Last summer, the town held its first food festival. More than 5000 people came, and the local restaurants sold out of food by evening. The mayor has already announced a second festival for next year.” Why most likely did the mayor announce a second festival?
In a survey of 200 nursing students, 150 said they studied best in the morning, 30 preferred the afternoon and 20 preferred the evening. What percentage of the students preferred the morning?
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?
“The forest fire was finally under control after three days. Firefighters praised the townspeople, who had cleared dry brush around their homes weeks earlier, for saving many houses.” Why did the firefighters praise the townspeople?
Read the sentences: (1) Finally, the nurse records the result. (2) First, the nurse washes her hands. (3) Next, she places the thermometer under the patient’s tongue. (4) Then she waits for the beep and reads the number. Which order is correct?
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