When geologists want to study an active earthquake fault, they often rely on a trenching study. ... They brace the walls, if needed, to prevent cave-ins, then they climb down into the trench and carefully map its walls, looking for signs of past earthquakes and ground movement.
Answer:
D. Overcast skies with strong winds
Explanation:
The correct option is - D. Overcast skies with strong winds
The answer is C. Rubber. Iquitos profited greatly from the boom of the rubber industry, beginning in the 1900s.
