Two sister cities had different environments. Shanghai had big problems with air pollution while Berna took very good care of the surrounding environment and air quality. Which city had air that was not harmful to human beings?
Ans: Berna

Chad invested massively in railways and highways over the past decade. They also funded many IT projects and telecom infrastructure. On the other hand, Bahrain invested less, and didn't do much to improve communication pathways and technologies between different villages. Which country experiences more of a cultural isolation effect?
Ans: Bahrain

Peet farm was supplying a nearby city with organic milk. Toad farm was a competitor on the same market, but they didn't produce organic milk, they used conventional agricultural methods. Which farm had a higher eutrophication potential per ton of milk or per hectare of farmland?
Ans: Toad

Johnny is playing with a toy train set his parents bought him. The controls for this train set allow him to make it go faster or slower and it even has a rail switch to make it travel on different tracks branching off to the left or right. Will Johnny using the rail switch be an example of a change in direction or a change in speed?
Ans: direction