In [[biology]], An'''adaptation''' is a special part a living creature has three related meanings. Firstly, it is the dynamic evolutionary process that fits [[organism]]s to their environment, enhancing their [[Fitness (biology)|evolutionary fitness]]. Secondly, helps it is a state reached by the population during that processsurvive. Thirdly ==Examples===Adaptations for cold=Some animals have thick fur, it is a [[phenotypic trait|phenotypic]] fluffy feathers or '''adaptive trait''', with a functional role large amount of fat to help them live in each individual organism, that is maintained and has been [[evolution|evolved]] by [[natural selection]]the cold.