The word “mycorrhizal” can be translated as “fungus-root”. “Myco” (fungus) and “rhiza” (root), partner in beneficial symbiotic relationships called symbiotic mutualisms to form mycorrhizal fungi. Mycorrhizal networks can grow over large areas and form underground trading networks with plants. This relationship effectively extends plant and tree root systems out into soil, giving them the ability to get the nutrients they need to live. Plants derive glucose (sugar) from photosynthesis and trade it to the fungi for key nutrients that fungi are able get from the environment by foraging, hunting, and mining. More than 90% of terrestrial plants rely on these relationships to get food and water, and have done so for hundreds of millions of years. These partnerships allowed plants to move from water to land.