Which of the following is NOT considered a component of soil?

The answer identifies organic matter as a component of soil, which is actually a crucial part of soil composition. Soil is primarily composed of mineral particles, which include sand, silt, and clay, along with organic matter.

Each of these components plays an essential role in soil health and function. Sand, silt, and clay are types of soil particles that vary in size and contribute to the texture of the soil. Organic matter, on the other hand, includes decomposed plant and animal material, which enriches the soil, improves its structure, enhances its ability to retain water and nutrients, and supports microbial life.

Therefore, stating that organic matter is not a component of soil is incorrect, as it is an integral part of healthy soil ecosystems.