Structural adaptation refers to the physical changes or modifications that organisms undergo to better suit their environment and increase their chances of survival. This can include changes in anatomical features, such as the size or shape of body parts, as well as changes in behavior or physiology. Structural adaptation is a key component of evolutionary theory, as organisms that are better adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to future generations. Examples of structural adaptations include the development of camouflaging coloration, the evolution of wings for flight, or the growth of a thicker fur coat in colder climates.