vertebrate - A type of animal with a back bone, amphibian - A type of animal that lives in an out of water, group - Similar plants or animals are put into a ..., continuous - When a result can take any value within a range of values it is said to be ..., invertebrate - A type of animal without a back bone, variation - A small difference between members of the same species, reptile - A type of animal with scales that only lives on land, abdomen - The lower part of an animal's body, containing the stomach and other organs, insect - A type of small, air-breathing animal with six legs, mammal - A type of animal that gives birth to live young, fish - An animal that lives in water and is covered with scales, characteristic - Features that animals or plants have, kingdom - One of the five major divisions of living things,

Variation and Classification

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