Which element is not a component of soil?

The soil beneath your feet is stratified into layers that help us understand how soil is formed. If you collected a soil sample that contained accumulations of clay and subsoil, from which horizon (layer) did this soil come?

Which soil layer is composed of weathered rock (parent material) and contains little to no organic matter?

What is the brown insoluble particles from partially decomposed organic matter?

Soil scientists help farmers discover how healthy their soils are. When a soil scientist measures the ability of soil particles to clump together, what soil property are they measuring?

Conserving our natural resources is one of the challenging issues of the 21st century. What important natural resource is comprised of clay, silt, pebbles, and sand?

What are soil horizons?

__________ is soil with the smallest particles. (Less than 0.002mm diameter).

Soil is stratified into different layers, called horizons. Which horizon contains freshly fallen leaves, plant litter, and lots of organic matter?

Which of the following choices best describes the process by which soil horizons accumulate material such as iron, clay, organic compounds, and aluminum?