Ichnology is the study of the trace fossils. Trace fossils are evidences that are left by the organisms and examples would include burrows, coprolites, imprints and footprints.Hope these are the answers and would then be of help in this assignment.
Answer:
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Blizzards, torrential rainstorms, tornadoes, hurricanes, flu epidemics,
domestic terrorism, earthquakes, nuclear war, and municipal bankruptcy
would all be pretty devastating.
The Answer is 3. Cattle ranching