Which of the following statements is false?
A. Organic agriculture currently accounts for less than 1 percent of the farmland in America
B. Organic agriculture depletes the soil of nutrients more rapidly than conventional agriculture, because there are no fertilizer applications to replenish the soil
C. Organic agriculture leads to healthier soils than conventional methods
Answer: B
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Why does a glowing splint of wood burn only slowly in air, but rapidly in a burst of flames when placed in pure oxygen?
A. Pure oxygen is able to absorb carbon dioxide at a faster rate. B. Oxygen is a flammable gas. C. A glowing wood splint is actually extinguished within pure oxygen because there's no room for the smoke to expand. D. There is a greater number of collisions between the wood and oxygen molecules.
In which direction do shorelines in the eastern U.S. shift in response to global glacial episodes?
A. Seaward B. Landward C. From north to south D. From south to north
Formerly a French colony, __________ has transitioned to independence successfully.
Fill in the blank(s) with the appropriate word(s).
Daily changes in the elevation of the ocean surface are called ________.
A) tides B) tombolos C) sea arches D) tidal flats