How many seismic stations are needed to locate the epicenter?

Which are results of technological advances? increased people's exposure to new ideas created a global culture valued by people around the world brought harmony to diverse groups of people reduced the number of people living in rural areas

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction

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