Which of the following is NOT characteristic of the Third Agricultural Revolution?
A) mechanized inputs — replacement of human farm labor with machines
B) chemical inputs — use of inorganic fertilizers and pesticides
C) occurred in the 20th century and continues through today
D) ended with the arrival of the Green Revolution
E) turned agricultural outputs into secondary sector inputs
Answer: D
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The incidence of a beam of visible light on glass causes most atoms in the glass
A. into forced vibration. B. to convert light energy into thermal energy. C. into resonance. D. to spread energy in various directions.
Which of the following statements about coal as an energy source is false?
a. Coal is inexpensive. b. Coal is sparse. c. Coal is easily mined. d. Coal produces about one-third of U.S. electricity e. Coal produces about 35% of US carbon dioxide emissions
During its early years the actions of the EPA were based on a command-and-control philosophy.
Answer the following statement true (T) or false (F)
A low-pressure system in which the Coriolis effect is weaker than the pressure gradient force results in ________ flow
Fill in the blank(s) with the appropriate word(s).