Examlex
The birth rates in societies that have experienced a shift from a subsistence-based to cash-based economy tend to rise because couples in the latter economy are able to generate sufficient wealth to support more children.
Replacement Rate
The total fertility rate necessary to offset deaths in a country and thereby keep the size of its population constant (without relying on immigration). For most countries, a total fertility rate of about 2.1 births per woman per lifetime.
Total Fertility Rate
The average number of children a woman would have over her lifetime, given current birth rates.
Subsistence Levels
The minimum level of income or resources that is considered adequate to maintain life and health.
Efficient Energy Usage
The practice of utilizing energy resources in a way that maximizes output while minimizing waste and costs.
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