Ever ask yourself, "Do we really need poop?" Well, the answer is…YES! In this Pebble Explore book, discover how this not-so-lovely part of nature is essential to our world. In fact, we need poop to help crops grow and replenish soil. Certain animals even eat poop for nutrients! All around us, there are plants, animals, and other living things that help keep our world working. In this Pebble Explore series, young readers will learn all about parts of nature we don't think about much-or wish we didn't have to think about-and just how important they really are. With eye-catching photos, quick facts, and beyond-the-book back matter, budding scientists are sure to enjoy exploring more about the NATURE WE NEED.