Multiple Choice
What can a biologist infer from a population that is uniformly distributed throughout its habitat?
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50. Population Ecology
Population Demography
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Birth and death rates are expressed as the number per _____ individuals per unit of time.
A
100,000
B
1,000
C
100
D
10,000
Verified step by step guidance1
Understand the concept: Birth and death rates are demographic measures used to describe population changes over time. They are typically expressed as the number of births or deaths per a specific number of individuals in the population per unit of time (e.g., per year).
Recognize the standard convention: In biology and demography, birth and death rates are often standardized to make comparisons easier. The most common standard is per 1,000 individuals, which allows for clear and consistent reporting across different population sizes.
Analyze the options provided: The question lists several possible denominators (100,000; 1,000; 100; 10,000). You need to identify which denominator aligns with the standard convention used in demographic studies.
Recall the correct standard: The denominator of 1,000 individuals is widely used in demographic studies to express birth and death rates. This standard ensures that the rates are manageable and comparable across populations of varying sizes.
Conclude the reasoning: Based on the standard convention, the correct answer is '1,000,' as birth and death rates are typically expressed as the number per 1,000 individuals per unit of time.
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