All trademarks, copyright and logos belong to their
©2003 Cynthia O'Hora All rights reserved.
Pennsylvania Science Anchors
S.A.2. Processes, Procedures, and Tools of Scientific Investigations
S.A.3. Systems, Models, and Patterns, S.B.1. Structure and Function of Organisms
S4.B.3.1.1 Describe the living and nonliving components of a local ecosystem
S8.A.1 Reasoning and Analysis