Essential Question: 1. How does your body get rid of wastes produced when you use Chemical Energy? 2. How does your body protect itself from invaders? 3. How efficient is the circulatory system in distributing materials to all cells in your body? Due Today Notes 17.1 through 17.5 Today’s Announcements 1. After school help next Thursday. 2. Grades close today, work due … [Read more...]