Global food supplies can be made more available and affordable by
A. purchasing food from big box stores.
B. consuming more meat.
C. eliminating subsidies.
D. wasting less food.
E. promoting free trade.
Answer: D
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The genetic code describes
A. the A-C-T-G sequence of nucleotides in different organisms. B. how codons bind to anticodons. C. how different codons correspond to amino acids. D. none of the above
The use of water to cool industrial facilities
A. was banned as a result of the Clean Water Act. B. can result in a thermal plume and attract certain fish, birds, and marine mammals. C. can attract certain fish, birds, and marine mammals. D. can result in a thermal plume.
Which of the following about parasites is true?
A) They affect their hosts in a density-independent manner. B) Their hosts represent a type of intraspecific competition. C) They occur in animals but not plants. D) They may live inside or outside of their host.
The average GNI adjusted for PPP in Sub-Saharan Africa was
A) $2200. B) $3300. C) the lowest in the world. D) $2200 and the lowest in the world. E) $3300 and the second lowest in the world.