Practices that add organic matter and reduce tillage can be expected to most significantly increase ...

Practices that add organic matter and reduce tillage can be expected to most significantly increase the ________ in a soil.
 
  A) fineness of texture B) macropores C) total porosity D) bulk density

Question 2

Soil detritivores feed principally on ________.
 
  A) dead tissues
  B) larger, but defenseless animals
  C) plant roots
  D) microorganisms
  E) smaller organisms

Question 3

A landscaping contractor wants to change the texture of a silt loam soil to meet the specifications for a loam. S/he would most likely do so by adding ________ to the soil and mixing it well.
 
  A) humus B) compost C) sand D) clay E) either A or B

Question 4

Soil colors are scientifically described by ________ color designations such as 10YR3/4.
 
  A) wavelength B) Parson's C) structural D) USDA E) Munsell