Question

What are various components of soil?

Answer 1

1. Soil consists of mineral matter (45%), organic matter (5%), air (25%), water (25%), and a variable number of soil organisms.
2. Mineral matter consists of gravel (size 2-10 mm), sand (0.02-2.0 mm), silt (0.002-0.02 mm), and clay (below 0.002 mm).
3. Organic matter is in semi-decayed form and is called humus.