High Quality Content by WIKIPEDIA articles! Acclimatization or acclimation is the process of an organism adjusting to change in its environment, allowing it to survive changes in temperature, water and food availability, other stresses and often relates to seasonal weather changes. Acclimatization occurs in a short time, (days to weeks) and within one organism's lifetime (compare adaptation). This may be a discrete occurrence or may instead represent part of a periodic cycle, such as a mammal shedding heavy winter fur in favor of a lighter summer coat. Acclimation is an important characteristic among many organisms because it allows them to evolve over time while changes are also simultaneously occurring in their environment. Organisms adjust their morphological, behavioral, physical, and/or biochemical traits in response to these environmental changes that they are faced with.