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 1856 San Leandro became the county seat of Alameda county, but the county courthouse was destroyed there by the devastating 1868 quake on the Hayward Fault. The county seat was then re-established in the town of Brooklyn (now part of Oakland), California in 1872.