TLS Online TPP Program

#Question id: 24643


 Which of the following statements about typical soil horizons is correct?

#Unit 10. Ecological Principles
  1. top layer is the O horizon, or organic layer, subdivided into Oi, the humus layer, and Oa, the litter layer
  2.  A horizon, where most of the plant roots are located
  3. E layer is the zone of eluviation or maximum leaching consider in B horizon
  4.  In C horizon, litter layer and humus layer both present