The ratio of the number of farmers to the amount of arable land is known as the ________ density
A) physiological
B) scientific
C) arithmetic
D) agricultural
E) hypothetical
Answer: D
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Which of the following statements applies to the biogeophysical feedback mechanism that occurs in the Sahel?
A. Reduced cloud cover relates to an increase in both surface temperatures and rainfall. B. Reduced vegetation relates to a lower surface albedo and an increase in rainfall. C. Reduced vegetation relates to a decrease in both surface temperatures and rainfall. D. Increased vegetation relates to an increase in surface temperatures and a decrease in rainfall.
Ridge tillage is a system of planting crops on ridge tops and is part of the sustainable agricultural practice of protecting the soil
Indicate whether the statement is true or false.
Discuss the problems that occurred while trying to determine longitude. How was the longitude
problem finally solved? What will be an ideal response?
Which of the following describes a property of pure water?
A) more dense as a solid B) acidic pH C) can hold many molecules in solution D) changes temperature rapidly E) molecules are noncohesive