Emmigration refers to the process of leaving one's country to settle in another. It typically involves individuals or groups moving for various reasons, such as seeking better economic opportunities, escaping conflict, or reuniting with family. Emigrants often face challenges related to legal status, cultural adaptation, and integration in their new communities. The term is often contrasted with Immigration, which is the act of entering a new country.
Four factors that produce changes in population size would be disease, water, food and shelter. Disease can quickly decrease a population size.
1) every large population 2) no emigration or immgration (no gene flow) 3) no mutations: no new alleles added to the gene pool 4) random mating: no sexual selection 5) no natural selection: all genotypes have equal chance at surviving