Question

Which of the following options defines humus?

• A. Decaying inorganic matter
• B. Sand particles
• C. Dead, decaying organic matter
• D. Plastic particles

Answer 1

The correct option is C

Dead, decaying organic matter

A dark-brown or black organic substance made up of decayed plant or animal matter. Humus provides nutrients for plants and increases the ability of soil to retain water. Thus, humus is composed of organic matter (matter that was once a part of living things).