Earthquakes with magnitudes between 1.0 and 2.9 on the richter scale are
a. usually not felt
b. extremely destructive
c. cause by transform faults
d. always recorded by instruments

Option: A. usually not felt

Explanation:

Earthquakes with magnitudes between 1.0 and 2.9 on the Richter scale are usually not felt. The 1.0 magnitude called micro-earthquakes, which happen every year in several million with creating no destruction. The 2.0–2.9 magnitudes slightly observe by people but do not bring any destruction of buildings. These earthquakes do happen in every year with approximately one million.

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