56. Which of the following is a measure of the ability of soil to retain moisture?
a. Soil organic matter
b. Soil texture
c. Soil structure
d. Soil pH
57. What is the term used to describe the process of adding lime to the soil to increase the pH?
a. Liming
b. Acidifying
c. Fertilizing
d. Amending
58. Which of the following nutrients is most likely to be deficient in a soil with a low organic matter content?
a. Nitrogen
b. Phosphorus
c. Potassium
d. Calcium
59. Which of the following soil horizons is characterized by the presence of unweathered parent material?
a. A horizon
b. B horizon
c. C horizon
d. R horizon
60. What is the term used to describe the process of adding acid to the soil to decrease the pH?
a. Liming
b. Acidifying
c. Fertilizing
d. Amending
