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Knowledge and Skills Statement

Science concepts--biological structures, functions, and processes. The student knows that multicellular organisms are composed of multiple system that interact to perform complex function.
Glossary terms and definitions are consistent across kindergarten through high school in the TEKS Guide. The definitions are intended to give educators a common understanding of the terms regardless of what grade level they teach. Glossary definitions are not intended for use with students.

the reason for which an object or a process occurs in a system

regularly interacting or interdependent group of items forming a unified whole