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Lesson 1 2 vocab

Lesson 1 vocab

QuestionAnswer
Homeostasis A stable internal balance
Adaptation A psychical or behavioral change in an animal to better its survival
Vertebrate An animal with a backbone
Invertebrate An animal without a backbone
Tissue A group of cells that join to do one function
Organ A system of cells that join together
Radial Symmetry A type of symmetry in animals that only live in water and have to backs or front
Bilateral Symmetry A type of symmetric for animals with complex organ systems
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