Facility Licensing. The Department of Health Care Services (DHCS) has sole authority to license facilities providing 24-hour residential nonmedical services to eligible adults who are recovering from problems related to alcohol or other drug (AOD) misuse or abuse.
All organisms have adaptations that help them survive and thrive. Some adaptations are structural. Structural adaptations are physical features of an organism like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations. Adaptations are the result of evolution. Evolution is a change in a species over long periods of time. Adaptations usually occur because a gene mutates or changes by accident! Some mutations can help an animal or plant survive better than others in the species without the mutation. For example, imagine a bird species.
Gene Flow. Evolution can also occur as a result of genes being transferred from one population to another. This gene flow occurs when there is migration. The loss or addition of people can easily change gene pool frequencies even if there are no other evolutionary mechanisms operating. For instance, if all red haired people were to leave Scotland, the next generation there would likely have very few people with this trait.