Adaptations are changes that living organisms make to survive and thrive in their environments. These changes can be physical, like the thick fur of a polar bear that keeps it warm in icy habitats, or behavioral, like the way birds migrate to find food during different seasons. Adaptations help species cope with challenges such as climate, predators, and food availability. Over time, adaptations can lead to the development of new species through a process called evolution. For example, the long neck of a giraffe allows it to reach leaves high in trees, giving it an advantage over other herbivores. These traits are passed down through generations, ensuring that the species continues to thrive.