Adaptations

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when animals have long periods of deep sleep during winter. Their metabolism, or the rate the body burns calories, slows down to save energy.

Complex animals use their circulatory systems to provide their cells with water and food. Plants do not have circulatory systems. What have they developed instead to move nutrients and water?

Charles Darwin observed the finches on the Galapagos island and noticed that each species was well suited to the life it led due to the size and shapes of its beaks. Beak shape and size in these finches is an example of —

Behavioral or physical characteristics of an animal that help it to survive in its environment

Large-scale movement of members of a species to a different environment due to climate, food or to find a mate.

Which of the following could be a valid explanation for the differences in mouthparts among insects?

Organisms have gradually adapted certain structures that help them succeed in their environments. What internal structure have birds developed that helps them successfully fulfill their niche?

Chameleons are reptiles that have the ability to hide from predators and prey by blending in with their environment. They can change the pattern and/or color of their skin. This ability is known as —