The best explanation for the cause of atmospheric pressure is:
A) air temperature.
B) weight of the air above.
C) wind force.
D) air density.
E) air compression.
B
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Water use in the High Plains (Ogallala) aquifer system has been severely constrained by a series of restrictive state and federal laws to reduce pumping.
Answer the following statement true (T) or false (F)
The soil structure resulting from the castings of earthworms
A) improves the infiltration and aeration of soil. B) decreases the infiltration and aeration of soil. C) decreases the nutrient-holding capacity of soil. D) improves the nutrient-holding capacity but decreases the aeration of soil.
Ethanol produced from bioenergy starts with ________ produced by ________
A) ammonia; anaerobic bacteria B) hydrogen gas; wind turbines C) methane; sewage sludge D) CO2; burning fossil fuels E) starch; corn and sugar cane
Alluvium refers to stream deposits, mainly sand and gravel
Indicate whether the statement is true or false