46. Which of the following soil horizons is characterized by the presence of weathered parent material?
a. A horizon
b. B horizon
c. C horizon
d. R horizon
47. What is the term used to describe the process of water moving downward through the soil?
a. Leaching
b. Capillary rise
c. Evaporation
d. Transpiration
48. Which of the following is a measure of the amount of water in the soil?
a. Electrical conductivity
b. Total dissolved solids
c. Soil moisture content
d. pH
49. Which of the following is a measure of the ability of soil to allow air and water to move through it?
a. Soil organic matter
b. Soil texture
c. Soil structure
d. Soil pH
50. What is the term used to describe the movement of soil particles by wind or water?
a. Leaching
b. Erosion
c. Compaction
d. Aeration
