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You are given a piece of pie straight out of the oven, so the crust and the filling are at the same temperature. You sample a piece of crust with no problem, but when you put a piece of filling in your mouth, you burn your tongue. Why?
Metamorphosis
Transition from one developmental stage to another, such as from a larva to an adult. See also complete metamorphosis and incomplete metamorphosis.
Amphibia
A class of cold-blooded vertebrates that includes frogs, toads, salamanders, and newts, distinguished by their ability to live both in water and on land.
Vertebrate Classes
Categories within the subphylum Vertebrata, distinguishing animals based on key features like presence of a backbone, including mammals, birds, reptiles, amphibians, and fish.
Cartilaginous Skeleton
A type of skeleton found in certain animals where the principal structural component is cartilage, rather than bone.
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