41. Which of the following soil horizons is characterized by the accumulation of clay and other minerals that have been transported from the surface?
a. A horizon
b. B horizon
c. C horizon
d. R horizon
42. What is the term used to describe the process of breaking down organic matter in the absence of oxygen?
a. Composting
b. Anaerobic decomposition
c. Aerobic decomposition
d. Liming
43. Which of the following is a measure of the degree to which soil can hold onto water?
a. Texture
b. Structure
c. pH
d. Organic matter content
44. What is the term used to describe the process of adding nutrients to the soil?
a. Liming
b. Acidifying
c. Fertilizing
d. Amending
45. Which of the following nutrients is most likely to be deficient in a soil with a low pH?
a. Nitrogen
b. Phosphorus
c. Potassium
d. Magnesium
