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.
Housing costs are relatively high in all areas of the county. The county is divided into two major geographical units by series of northwest/southeast running hills; the 32 mile long coastal plain and the Livermore-Amador Valley. Elevations in Alameda County begin at sea level and reach 3,700 feet in east county.