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?
- AHard bone
- BThin shell
- CCartilage
- DScales
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?
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?
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?
“The patient’s blood pressure was stable throughout the night, with every reading close to the one before.” What does “stable” mean here?
“Although the hiking trail was steep and rocky, the view from the top made the climb worthwhile.” What does the author suggest?
“The hospital will introduce a new uniform colour system. Nurses will wear navy, physiotherapists green and healthcare assistants light blue. This will help patients know who is caring for them.” What is the purpose of the new system?
“Supporters of the new law say it will reduce noise at night. Opponents say it will hurt businesses that stay open late. Both sides agree that residents deserve a good night’s sleep.” On what do both sides agree?
The author writes: “Studies show that people who drink water before meals eat slightly fewer calories. Therefore, drinking water is the only thing you need to lose weight.” Why is the conclusion not supported?
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