In the circled area which of the following is the main activity: farming, fishing, forestry or mining.

because there are alot of mountains

no sé si entiendes español pero te daría la respuesta si lo supiera, pero lo siento mucho

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.