21. Which of the following is a type of sustainable agriculture?
a) Organic farming
b) Industrial agriculture
c) Monoculture
d) None of the above
Answer: a
22. Which of the following is a major factor in determining the fertility of soil?
a) Soil texture
b) Soil pH
c) Organic matter content
d) All of the above
Answer: d
23. What is the term for the process by which water is added to soil?
a) Transpiration
b) Precipitation
c) Osmosis
d) None of the above
Answer: b
24. Which of the following is a major factor in determining the pH level of soil?
a) Climate
b) Parent material
c) Topography
d) All of the above
Answer: b
25. Which of the following is a type of livestock?
a) Sheep
b) Wheat
c) Corn
d) None of the above
Answer: a
