The different outcomes in touching a faulty 120-V lamp socket and a high-voltage Van de Graaff generator have to do with differences in
A. sustainability of charge flow.
B. amount of energy transferred.
C. duration of charge flow.
D. all of the above
Answer: D
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What happens when the price of a mineral commodity drops?
A. It halts exploration for new deposits. B. It encourages less waste of the resource. C. It triggers a search for a substitute. D. It encourages recycling of the mineral commodity.
The IPAT model states that the key factor in environmental impact in
a. developing countries is resource use b. developing countries is population size c. developed countries is resource use d. developed countries is population size e. more than one of these answers
The key special chemical used by chemosynthetic communities at salt seeps is ________.
A. methane B. phosphate C. silicate D. nitrate E. hydrogen sulfide
A(n) ________ represents a former meltwater channel or tunnel in glacial ice that was filled with sand and gravel
A) yazoo ridge B) esker C) valley plain D) kettle