Polar bears live in the Arctic. Their thick fur and a layer of fat keep them warm in freezing temperatures. They hunt seals on the sea ice. What do polar bears mainly hunt?
- APenguins
- BSeals
- CSalmon
- DReindeer
Polar bears live in the Arctic. Their thick fur and a layer of fat keep them warm in freezing temperatures. They hunt seals on the sea ice. What do polar bears mainly hunt?
A hospital map key shows: blue square = lift; green circle = toilet; red cross = emergency department; yellow star = café. What does a green circle mean on the map?
The cheetah is the fastest land animal. It can reach speeds of about 100 km/h, but only for short bursts of around 30 seconds. What limits the cheetah’s top speed?
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?
The word “quarantine” comes from the Italian “quaranta giorni”, meaning forty days. In the 1300s, ships arriving in Venice during plague outbreaks had to wait forty days before passengers could come ashore. Why did ships have to wait before passengers came ashore?
Washing hands with soap for at least 20 seconds removes many germs. Soap breaks up the oily layer that holds germs on the skin, and rinsing washes them away. What is the author’s main purpose?
Visiting rules: “Children under 14 may visit only with an adult. No more than 2 visitors at the bedside. Visiting ends at 8 p.m.” A mother and her 12-year-old and 15-year-old children want to visit together at 7 p.m. Which rule would they break?
“The test results showed a slightly high blood sugar. The doctor asked the patient to repeat the test after fasting overnight before making a diagnosis.” Why did the doctor most likely ask for a repeat test?
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