Return to Unit D Main Page

Unit D Changes in Living Systems: Practice Answers

Lesson 1.1 Water: An Essential Abiotic Factor
Lesson 1.2 Biotic Factors: The Influence of Living Things
Lesson 1.3 The Web of Life
Lesson 1.4 Conducting a Field Study
Lesson 1.5 The Recycling of Matter
Lesson 1.6 Biodiversity and the Heritage of Our Lands
Lesson 2.1 Primary Succession
Lesson 2.2 Secondary Succession
Lesson 2.3 Populations
Lesson 2.4 Adaptations
Lesson 2.5 Evolutionary Theory