Examlex
Respond to this hypothetical example of evolution: A population of peppered moths contains individuals ranging from ones that are mostly black to ones that are mostly white. The moths that are easily seen on the barks of trees get eaten by birds. If soot from coal-burning factories makes tree trunks darker in color, then there will be __________.
Decreased
To become smaller or less in size, amount, intensity, or degree.
Demographic Changes
Alterations in the statistical characteristics of populations over time, including factors like age, race, employment, and marital status.
Declining Birthrates
A decrease in the number of babies born per year, often indicative of changes in societal values, economic conditions, or access to fertility treatments.
Life Expectancy
The average number of years a person can expect to live.
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