Practice Quiz

MCAS Biology Practice

Category - Biology

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On remote islands, immigration and emigration usually do not have a large effect on population sizes. A bird population on a remote island remains at a relatively constant size year after year. Which of the following most likely describes the birthrate and the death rate for this population?
  1. Birthrate and death rate are both zero.
  2. Birthrate and death rate are close to equal.
  3. Birthrate is significantly less than death rate.
  4. Birthrate is significantly greater than death rate.
Explanation
Answer: B - Birthrate and death rate are close to equal.
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