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. Scott Foresman Science 4.4 Genre Comprehension Skill Text Features Science Content Nonfi ction Cause and Effect • Call Outs • Captions • Diagrams • Glossary Ecosystem Changes ISBN 0-328-13869-X ì<(sk$m)=bdigjc<. 6:44:16 PM Scott Foresman Science 4.4 Genre Comprehension Skill Text Features Science Content Nonfi ction Cause and Effect • Call Outs • Captions • Diagrams • Glossary Ecosystem Changes ISBN 0-328-13869-X ì<(sk$m)=bdigjc<. resources in an ecosystem changes, populations change too. Think about the rabbit. With plenty of clover and other plants Organisms Interact Changing Ecosystems Within an ecosystem, organisms