The theory, illustrated here, states that much evolutionary change takes place in short periods of time tied to speciation events. a. gradualism. b. catastrophism. c. adaptive radiation. eliminate d. punctuated equilibrium

Match the following. match the items in the left column to the items in the right column. 1. foreshocks process used to locate the epicenter of an earthquake 2. magnitude newer magnitude scale that measures the amount of moved (displaced) rock along a fault to determine the strength of an earthquake 3. mercalli intensity scale measure of the total amount of energy released during an earthquake 4. moment magnitude scale areas on active faults where a major earthquake hasn't occurred in a long time 5. richter scale mini-quakes that usually occur before a major earthquake 6. seismic gaps scale that measures the effects or severity of an earthquake 7. triangulation scale of magnitude based on the size of seismic waves produced by an earthquake

Explain how scientists use geologic time to determine the age of landforms.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.