Geologic processes proceed at a ponderous pace, however, and when measured in the time-scale of a human lifetime, volcanic eruptions or destructive earthquakes are infrequent events.
(Geologic processes; proceed; however) (volcanic eruptions or destructive earthquakes; are; infrequent events; T:when measured in the time-scale of a human lifetime)
Geologic processes volcanic eruptions or destructive earthquakes
proceed are
however
infrequent events T:when measured in the time-scale of a human lifetime