Question

Top soil contains the following:

• A. humus and living organisms only
• B. humus and soil particles only
• C. humus living organisms and plants
• D. humus, living organisms, and soil particles.

Answer 1

The correct option is D

humus, living organisms, and soil particles.

The correct answer is option D.

Explanation of the correct answer:

1. The formation of soil takes thousands of years.
2. It is formed by the physical and chemical weathering of rocks.
3. Different layers of soil are observed based on the colors and size of particles.
4. The uppermost layer of the soil is called topsoil.
5. Another name for topsoil is horizon A.
6. It is composed of decomposed material and organic matter.
7. The roots of small plants are embedded in topsoil.
8. Hence, it contains humus, living organisms, and soil particles.

Final answer: The topsoil contains humus, living organisms, and soil particles.