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All animals live in habitats. Habitats provide animals with food, shelter , and all basic necessities, yet there is still more to survival :adaptations. Adaptations are physical features which enable animals to obtain food, keep safe, withstand weather, build homes, and attract mates. These physical adaptations do not develop during an animal's life, but are developed over many generations. A turtle's shell, a duck's beak, a fish's fins are all examples of how physical adaptations help animals to survive.
-There are three broad categories of adaptation: structural, physiological, and behavioral.
-Many mammals limbs are only adaptations from a similar origin, because they were all adapted to perform different functions later on.