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?
- ASalmon
- BPenguins
- CReindeer
- DSeals
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?
Before giving blood, donors answer questions about their health and have their blood pressure and iron level checked. If the checks are normal, they donate about half a litre of blood, then rest and have a snack. What happens after the health checks are normal?
Vitamin C is found in many fruits and vegetables, such as oranges, strawberries and peppers. The body uses it to help heal wounds. Which food is named as a source of vitamin C?
“Of all the jobs on the farm, Leo liked feeding the calves best. He even woke up early on weekends to feed them.” Which detail supports the idea that Leo enjoys feeding the calves?
“Pressure ulcers, also called bedsores, can form when a person lies in one position for too long. Nurses help prevent them by changing the patient’s position regularly.” Why do nurses change patients’ positions?
“Some people say that cats are unfriendly. My cat, Pepper, waits by the door every evening and sits on my lap while I read.” How does the writer use Pepper?
“Ten patients tried a new sleep app. Eight said they slept better. The app company now claims: ‘Proven to cure insomnia!’” Why is the claim not justified?
“In the early 1900s, many cities added chlorine to drinking water. Over the following decades, deaths from diseases spread by water, such as typhoid, fell sharply.” Which conclusion is most reasonable?
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