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An unread, unused copy: no writing or highlighting, and no missing or damaged pages. Every book we sell is brand new, including our lowest-priced titles.
The parts of a plant that grow below are just as important as what's above ground. Readers will learn about the world of roots, bulbs, and tubers, as well as other organisms that grow underground. Readers will also discover why the things that grow underground are an important part of the Earth.