Biology, Pages 58-67
Biology in clear, easy-to-read language
Biology is a comprehensive life science program for your reluctant readers and those who require additional help to grasp basic biological and life science concepts. This full-color, easy-to-read textbook addresses all these needs.
Written to meet national guidelines, students learn about classification and organization; patterns of reproduction, growth, and development; the human body's systems; ecological cycles; and other basic biological building blocks.
Lexile Level 840 Reading Level 3-4 Interest Level 6-12
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Because of carbon's versatility , however , this limited assortment of atomic
building blocks , taken in roughly the same proportions , can be used to build an
inexhaustible variety of organic molecules . Different species of organisms 5.
Different species of organisms , and different individuals within a species , are
distinguished by variations in their organic molecules . Since the dawn of human
history , people have used other organisms as sources of valued substances ...