Organic farming ________
A) has no national standards in the United States
B) is presently limited to crops of fruits and vegetables
C) and organically grown produce have not been supported by the European Union
D) began in the 1960s
E) has become more challenging because of contamination by GM crop varieties
Answer: E
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The theory of genetics was initially developed by studying
a. giraffes. d. mice. b. peas. e. cyanobacteria. c. humans
Which of the below is an active remote sensing system?
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A. a) reduction; b) oxidation B. a) oxidation; b) oxidation C. a) reduction; b) reduction D. a) oxidation; b) reduction