46. Which of the following is a type of plant that is commonly used as a nitrogen-fixing cover crop?
a) Wheat
b) Rye
c) Clover
d) None of the above
47. What is the term for the process by which nutrients are returned to the soil after a crop is harvested?
a) Transpiration
b) Photosynthesis
c) Composting
d) None of the above
48. Which of the following is a type of farming that involves the use of natural processes to improve soil fertility?
a) Organic farming
b) Industrial agriculture
c) Monoculture
d) None of the above
49. What is the term for the practice of using a variety of crops in the same area to reduce pest pressure?
a) Monoculture
b) Polyculture
c) Intercropping
d) None of the above
50. Which of the following is an example of a cereal crop?
a) Corn
b) Tomatoes
c) Carrots
d) None of the above