Multiple choice

layer of soil different from the other

  1. humus

  2. permeability

  3. soli profile

  4. horizon

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A soil horizon is a distinct layer in the soil profile with different physical and chemical properties from adjacent layers. Humus is organic material, permeability is a property, and 'soli profile' appears to be a typo.