MODULE 6 TAKING CARE OF OUR PLANET Unit 1 • Ecology • What is ecology? • Ecosystems • Biodiversity • Water Unit 2 • Planet Earth is in the danger zone • Earth's greatest threats • Air pollution • Water pollution • Land pollution Unit 3 • Disaster is avoidable • Be a part of the solution to pollution • Non-renewable energy sources • Renewable energy sources (1) • Renewable energy sources (2) • Green economy