Explain two ways in which plants contribute to the process of weathering of rocks? (2) what is soil profile? (3) What term is used to describe the layers of soil in a soil profile?

1. Plant roots can physically break apart rocks as they grow and expand, a process known as physical weathering. Additionally, plants release organic acids and other compounds that can chemically break down rocks, a process known as chemical weathering.

2. As plants die and decompose, they contribute organic matter to the soil. This organic matter can interact with minerals in the rocks, accelerating the weathering process.

3. A soil profile is a vertical section of soil that shows the different layers or horizons of soil. These layers are formed over time through the weathering of rocks and the accumulation of organic matter.

4. The term used to describe the layers of soil in a soil profile is horizons. The soil profile typically consists of several horizons, including the topsoil (A horizon), subsoil (B horizon), and parent material (C horizon).

Two ways in which plants contribute to the process of weathering of rocks:

1. Physical weathering: Plant roots physically break down rocks as they penetrate cracks and crevices, creating smaller pieces that are more susceptible to further weathering.
2. Chemical weathering: Plants release organic acids and other substances into the soil that chemically dissolve minerals in rocks, facilitating their breakdown.

Soil profile:

A soil profile is a vertical section of soil that shows the different layers, or horizons, that have developed over time. These layers are formed by various soil-forming processes such as weathering, leaching, and biological activity.

Term used to describe the layers of soil in a soil profile:

Horizon: The individual layers within a soil profile are referred to as horizons. Each horizon has distinct characteristics, such as texture, color, and organic matter content.