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Animals:Lesson 1 & 2
Question | Answer |
---|---|
Homeostatis | The condition in which an organism's internal environment is kept stable in spite of changes in its external environment. |
Adaptation | An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment. |
Vertebrate | Animals that have a backbone. |
Invertebrate | Animals that don't have a backbone. |
Tissue | A group of similar cells that perform a specific function. |
Organ | A body structure that is composed of different kinds of tissues that work together. |
Radial Symmetry | Multiple lines of symmetry. |
Bilateral Symmetry | Only one line of symmetry. |