They continue to use coal due to the fact it puts out the most energy for the least amount being used versus where nuclear is so to speek the best but the worst. hope this helps.
Here Jack is influenced by what Burrhus Frederic Skinner an American
psychologist calls negative reinforcement. Negative reinforcement which is the
opposite of positive reinforcement and it means that the rate of behavior is increased
in order to avoid an unpleasant situation or unpleasant stimulus or negative
outcome.
I'm not 100% certain, but I THINK your answer would be catatonic excitement. That's when someone in a catatonic state exhibits motor activity that doesn't really have a meaning behind it and generally does it regardless of attempts to stop them.
When the dollar depreciates against major foreign currencies, one general expects to see current-dollar exports increase, as U.S. produce goods become cheaper.