Ever wonder how plants reach toward the sun? Or how water gets from the roots to the leaves? A plant's stem is like a highway, transporting water and food where it's needed. Dig in to discover how stems work to support a plant's survival.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.