Population Growth. The butterfly is an example of a species where we would use the age-specific life table. A population is defined as a group of interbreeding organisms inhabiting the same region at the same time . In studying populations, demography, the study of the age structure of a population, is often considered.
Amador County is located in the Sierra Nevada Mountains of California. As of 2010, the population was 38,091. The county seat is Jackson. Amador County bills itself as The Heart of the Mother Lode and lies within the Gold Country.
The City of Jackson in California is the center of trade and industry in Amador County. The majority of the shopping centers, government offices, and many businesses are located in Jackson and its neighbor town, Martell. Amador County Model Railroad Museum - Showcasing our rich railroad, logging and mining history, next to the National Hotel.