HELP PLEASE IM GONNA DIE IF I DONT PASS! To find the epicenter of an earthquake, a seismologist needs to know

Question 22 options:

the epicenter distance from 10 seismic stations.

the intersection of two circles from two seismographic stations.

the distances from three different seismic stations to the epicenter.

the difference in the arrival times of the P- and S-waves at a single seismic station.

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: