Mars is called the Red Planet because its soil contains iron oxide, which gives it a reddish colour. Why is Mars called the Red Planet?
- AIts soil contains iron oxide.
- BIt has two small red moons.
- CIt has red oceans.
- DIt is very close to the sun.
Mars is called the Red Planet because its soil contains iron oxide, which gives it a reddish colour. Why is Mars called the Red Planet?
The heart is a muscle about the size of a fist. It pumps blood through the body day and night. In an adult at rest, it beats about 60 to 100 times a minute. According to the passage, how big is the heart?
The Amazon rainforest is in South America. It is home to millions of kinds of insects, plants, birds and other animals. What is the passage mainly about?
“The patient’s blood pressure was stable throughout the night, with every reading close to the one before.” What does “stable” mean here?
Some people think that a cold is caused by being out in cold weather. Colds are actually caused by viruses. People may catch more colds in winter because they spend more time indoors, close to others. According to the passage, why might colds be more common in winter?
“After the hospital put hand sanitiser by every bed, staff used it far more often, and infection rates on the ward fell.” What can be reasonably concluded?
The author writes: “All of my neighbours who drink coffee are energetic. So coffee must give everyone energy.” What is the flaw in this reasoning?
“The nurse noticed that Mr. Diaz, usually chatty, had barely spoken all morning and had left most of his breakfast. She sat down beside him and asked how he was feeling.” Why did the nurse most likely sit down with Mr. Diaz?
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