A.
Because of the urban heat island effect, less heat will be absorbed and regional temperatures will be slightly higher.
From my past experiences I use the results to make a new hypotheses or predictions.
Do NOT trust the link from the other user.
Single seismograph can register the occurrence of an earthquake. Analysis of the waves can yield the distance between the sensor and the epicenter. This describes a circle with the seismograph at the center. ... Adding data from a third station pinpoints the epicenter as the only place where all three circles intersect