Lesson 9: What do plants need? Lesson 10: What plants are in your area and how can you use them? Lesson 11: What are some landforms? Lesson 12: What changes Earth's surface? Lesson 13: How do landforms change quickly or slowly? Lesson 14: What are food chains and food webs? Lesson 15a: What is life like in the ocean and on the tundra? Lesson 15b: What are some types of ecosystems?
