Savant System is the answer.
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The answer would be B. First and foremost, North Korea's terrain and climate is not really great for farming and for years they are using chemical fertilizers from other countries to have crops. However, during the 1980s the Soviet Union cut their supply to North Korea causing crop yields to continue to decrease until people are already starving.
Answer:
U.S. and Russia
Explanation:
The ISS includes contributions from 15 nations. NASA (United States), Roscosmos (Russia) and the European Space Agency are the major partners of the space station who contribute most of the funding; the other partners are the Japanese Aerospace Exploration Agency and the Canadian Space Agency.
Operant conditioning was coined by behavior psychologist B. F. Skinner.
Operant Conditioning is a system of three types of responses [punishment], [neutral operants], and [reinforcers] as a response to behaviors. Skinner found [neutral operant] responses from the environment neither increase nor decrease the probability of a behavior being repeated, [reinforcing] a behavior encourages its continuance, and [punishment] for a behavior encourages the end of the behavior.
