Plants get their nutrients from the soil and pass them along to us when we eat the plants. Plants grow in nutrient rich soil and absorb the nutrients. We eat the plants and take in the nutrients. Through composting and decomposition, the soil gets the nutrients back, and the cycle starts again. The part of a tree or plant that grows underground.
Roots anchor the plant in the soil and are the way it absorbs water and nutrients.
Broken down rock and organic material that makes up the first few inches to many feet of the earth's top layer. Soil is classified by color, parent material, and particle size.