What do poop and plastic have in common? At first thought, it doesn't seem like much! But it all has to do with their state of matter--they are both solids! In this amusing volume, readers learn about what makes a solid, a solid as well as how poop is removed from water and how plastic affects our environment. Full-color illustrations and diagrams break down complex concepts for readers of all abilities. All of the science information supports knowledge building, a key component of the science of reading.