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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?

  1. 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
  2. B. Hummingbirds weigh about 4 grams.
  3. C. A human heart beats about 70 times a minute at rest.
  4. 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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