Filled with high interest exercises, this Grade 10 Unit 9 workbook focuses on ecosystems, communities and habitats, pollution, energy. Lifepac science curriculum brings the physical world of God's creation into focus. Students conduct experiments to reinforce scientific concepts, such as ecology and energy. Perfect for students who flourish in a self-paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews, and tests. Paperback.