The document defines adaptation as a change or adjustment made by organisms or systems to improve their situation or ability to function in a different environment. It discusses cultural adaptation as the process individuals go through to adjust to a new culture. This process typically involves stages of excitement, crisis or culture shock, adjustment, and acceptance of the new culture. The document provides examples of cultural factors that require adaptation, such as language, food, social norms, and climate. It also outlines common stages and challenges individuals may face when adapting to a new culture.