Which of the following farming practices would be expected to produce the least nutrient leaching and thus contribute most to soil sustainability?
A) Deep plowing, irrigation, and the use of inorganic fertilizers
B) Deep plowing, no irrigation, and the use of inorganic fertilizers
C) No plowing, irrigation, and the use of organic fertilizers
D) No plowing, drip irrigation, and the use of organic fertilizers
D
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Which of the following statements is FALSE regarding the Syrian Civil War?
A) millions of Syrians have been displaced and more than 220,000 have been killed as a direct result of the war B) ISIL gained control of wide swaths of Syrian territory in the east C) Israeli forces have occupied much of southern Syria to provide a defensive buffer against ISIL expansion D) Russia has come to the military aid of the Assad regime E) Syria has witnessed the destruction of many of its cultural and historical landmarks
Which of the following statements is true about seawater?
A) The salinity of seawater is negligible. B) Seawater is a solution. C) Seawater is pure water (H20). D) Seawater is densest near the surface, with decreasing density at increasing depths. E) The chemical composition of seawater has little spatial variability.
The fastest growing source of electricity in the world today is from ________
A) hydropower B) wind power C) solar power D) biomass E) nuclear power
Using the most reliable information available, how much of the Earth's land surface is used for agriculture today?
What will be an ideal response?