Soil Horizons Exploration

Soil Horizons Exploration

Read each question carefully and provide thoughtful responses. Refer to the provided diagram where applicable.

Observe the diagram below, which illustrates a typical soil profile with various horizons.

1. The uppermost layer of soil, rich in organic matter, is known as the   horizon.

2. The process by which nutrients are washed down from upper soil horizons to lower ones is called  .

3. The R horizon consists primarily of unweathered  .

1. Which soil horizon is characterized by the accumulation of clay, iron, and aluminum compounds leached from above?

2. Which of the following factors is NOT a primary factor in soil formation?

1. Describe the key characteristics of the A horizon and explain its significance for plant growth.

2. Compare and contrast the O horizon and the C horizon in terms of their composition and degree of weathering.

1. The E horizon is typically found in all soil profiles.

2. Bioturbation, the mixing of soil by organisms, can influence the development of soil horizons.

Match each soil horizon with its primary characteristic.