Expression of IdeasMediumComparing two quantities
Expression of Ideas practice question
While researching a topic, a student has taken the following notes:
- A hummingbird's heart beats about 1,200 times a minute in flight.
- A human heart beats about 70 times a minute at rest.
- Hummingbirds weigh about 4 grams.
- Hummingbirds can hover.
The student wants to compare the heart rates of a hummingbird and a human.
Which choice most effectively uses relevant information from the notes to accomplish this goal?
- A. A hummingbird's heart beats about 1,200 times a minute in flight, roughly seventeen times the resting rate of a human heart.Correct
- B. Hummingbirds weigh about 4 grams.
- C. A human heart beats about 70 times a minute at rest.
- D. Hummingbirds can hover.
Answer: A. A hummingbird's heart beats about 1,200 times a minute in flight, roughly seventeen times the resting rate of a human heart.
Both rates, compared.
Why the other answers are wrong
- B. Hummingbirds weigh about 4 grams.
- Weight.
- C. A human heart beats about 70 times a minute at rest.
- One rate only.
- D. Hummingbirds can hover.
- A skill, not a rate.
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