How many seismic stations are needed to locate the epicenter of an earthquake?

The number of seismic stations that are needed to locate the epicenter of an earthquake should at least be three (3).

Explanation: The three process is by locating:

1. The difference is the distance of the point.

2. The difference in the arrival time of every primary and secondary waves.

3. To make a circle of the 3 locations and where they touch themselves.

The center is epicenter of the earthquake.

i only have few minutes according to the map above, which shows religious cultural regions, what two religions are most commonly practiced in africa? a. christianity and buddhism b. buddhism and hinduism c. islam and christianity d. hinduism and islam