The disappearance of organisms from the geologic record provides evidence for which of the following events? 1. continental drift. 2. a change in sea level. 3. a change in climate. 4. periods of mass extinction.

The disappearance of organisms from the geologic record provides evidence for periods of mass extinction (number 4). When diverse organism assemblages disappear at, or near, a single geological horizon, we are able to postulate a catastrophic event. An indication of disappearance of organisms from the geologic record may be sufficient to establish an revolucionary change. This question is related to geologic history.

Note: Clues of environmental perturbations can show us many biological revolutions on a world scale.

the revolution instituted a short-lived roman republic.

c. the dred scott v. sandford case,