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A type of toad that often lives in the desert and has a sharp part called a spade on each of its back feet.
The series of changes some animals go through as they develop from eggs to adults.
When a liquid evaporates, it changes into a gas. Rain puddles evaporate into the air.
Changed over time to survive better in a habitat. Giraffes have adapted to have long necks so they can reach leaves high up in trees.