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.
In 1853, Jackson became the county seat of newly formed Amador County, California. Previously, from 1851â1852, it had been the county seat of Calaveras County. Jackson may therefore be the only city to have ever been county seat of two different counties at different times.