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 1854 Amador County was created, named after native Californian, Jose Maria Amador. Amador County's largest city is Jackson, founded in 1848. The early gold rush camp turned city was, like so many other gold rush towns along Hwy 49, destroyed by a raging fire in 1862. The city was rebuilt with as many as forty-two of those Civil War era buildings still standing today on and around Jackson's Historic Main Street.