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Lesson 1:
Why Do Offspring Look Similar to Their Parents?
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Lesson 2:
How Does the Environment Affect Traits?
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Lesson 3:
How Are Traits Affected by Both Inheritance and the Environment?
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Lesson 4:
Why Do Some Members of a Species Survive and Not Others?
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Lesson 5:
What Are the Life Cycles of Plants?
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Lesson 6:
What Are the Life Cycles of Animals with Backbones?
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Lesson 7:
What Are the Life Cycles of Animals Without Backbones?
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