Which of the following best describes Earth's axis?
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be
A. an imaginary line through Earth's center from
pole to pole
B. the average distance between Earth and the sun
C. the extra fourth of a day we have each year
D. The amount of time it takes Earth to revolve
around the sun
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Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?