Grizzly bears will eat just about anything. These bears can weigh over 800 pounds (363 kilograms), Body fat
accounts for about half of their bulk. They spend nearly half the year sleeping. If people lived like that, they would
quickly develop health problems leading to heart attacks. Yet these furry mammals rarely have heart illnesses. In
fact, their hearts are very healthy. Scientists want to know why some seemingly unhealthy habits do not affect
grizzlies. They hope that the answers will help humans avoid heart disease.
The bears are being____.
A: examined
B: amused
C: marked
D: punished
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