Question

Soil is a mixture of:

• A. Minerals
• B. Dead and living organisms
• C. Air and water
• D. All the above

Answer 1

Answer: (D)

All the above

Soil is the uppermost humus containing part of the Earth's surface, which can sustain terrestrial plant life.

Soil is composed of inorganic mineral particles (45 percent), water (25 percent), air (25 percent), and humus (5 percent). Humus is composed up of dead and decaying organic material.

Thus, the correct answer is option D.