High school class is discussing whether a particular discovery in chemistry has had a positive impact on society.
which question is the most important for the students to answer?
how have people and the environment been affected by the discovery?
how many scientists were involved in the discovery?
when was the discovery made?
at which institution was the discovery made?

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?