CONTENTS
Chapter 1
Investigate Identification Keys . . . . . . . . . . . . . . . . . . . . T5e
• How can you identify plants and animals using identification keys?
• Science Process Vocabulary observe, classify
Big Ideα Question How Do Scientists Classify Living
Things? . . . . . . . . . . . . . . . . . . . . . . . . . . . . T6–T7
• Science Academic Vocabulary cell, kingdom, species,
vascular plant, invertebrate, vertebrate
Investigate Plant Cells . . . . . . . . . . . . . . . . . . . . . . . . . T39a
• How do onion cells compare with Elodea cells when you observe
them under a microscope?
• Science Process Vocabulary observe, compare
Chapter 2
Investigate Changing Ecosystems. . . . . . . . . . . . . . . . . T53e
• How can you model the change in a pond ecosystem over time?
• Science Process Vocabulary model, conclude
Big Ideα Question What Are the Interactions in
Ecosystems? . . . . . . . . . . . . . . . . . . . . . . T54–T55
• Science Academic Vocabulary ecosystem, population,
community, niche, symbiosis, succession
Investigate Pollution and Plants. . . . . . . . . . . . . . . . . . T85a
• How does pollution in water affect the growth of rye grass?
• Science Process Vocabulary hypothesis, experiment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T100a
• Pioneer Freaky Frogs
• Pathfinder Freaky Frogs
T1a
