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Chapter 4 Lesson 1&2

Vocab from the Interactive Science Textbook

Homeostasis "The condition in which an organism's internal environment is kept stable in spite of changes in the external environment."
Adaptation "An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment."
Vertebrate "An animal with a backbone."
Invertebrate "An animal without 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 "A body plan in which any number of imaginary lines that all pass through a central point divide the animal into two mirror images."
Bilateral Symmetry "A body plan in which a single imaginary line divides the body into left and right sides that are mirror images of each other."
Created by: tschulz