Jellyfish have lived in the oceans for millions of years. They have no brain, no heart and no bones. Their bodies are mostly water. What are jellyfish bodies mostly made of?
- AShell
- BWater
- CBone
- DMuscle
Jellyfish have lived in the oceans for millions of years. They have no brain, no heart and no bones. Their bodies are mostly water. What are jellyfish bodies mostly made of?
An appointment card reads: “Dr. Lopez, Tuesday 14 March, 10:30 a.m. Please arrive 10 minutes early to complete paperwork.” What time should the patient arrive?
The table of contents of a first-aid book lists: Chapter 1 Cuts and Scrapes, page 3; Chapter 2 Burns, page 15; Chapter 3 Broken Bones, page 27; Chapter 4 Choking, page 40. On which page does the chapter about burns begin?
Florence Nightingale collected data on deaths among soldiers in the Crimean War. She showed in clear diagrams that more soldiers died from disease than from battle wounds, and she used this evidence to persuade the government to improve hospital sanitation. What was Nightingale’s main goal in collecting the data?
“City Park has a lake, tennis courts and a café. River Park has walking trails and a lake but no café.” What do both parks have?
“Water covers about 71 percent of Earth’s surface. Most of that water is salt water in the oceans. Only a small share is fresh water, and much of it is frozen in ice caps and glaciers.” What can you conclude from the passage?
A study reported that students who slept at least eight hours scored higher on tests than those who slept less. The study included 5000 students from many schools and controlled for age and family income. Why does the author mention the size of the study and the controls?
Antibiotics kill bacteria, but they do not work on viruses. Taking antibiotics when they are not needed can help bacteria become resistant, making future infections harder to treat. What would the author most likely recommend?
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