Why are earthquakes monitored worldwide instead of in earthquake-prone areas only?

As you may already know, the energy of earthquake waves is carried worldwide by seismic waves. These waves travel throughout the earth and also carry information with them about the matter via which they travel.

A lot of information about the Earth's crust comes from observing and monitoring these seismic waves.

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an economic of depression

all fossil fuels are nonrenewable, so think coal, gasoline, things that we will eventually run out of. all fossil fuels are nonrenewable resources, but not all nonrenewable recourses are fossil fuels. these resources are not being renewed as fast as we are using them. i hope this considering there weren't any answer choices.