Various efforts have been made over the centuries to predict earthquakes, including observing lights in the sky and ______ animal behavior. A: abnormal B: exotic C: absurd D: erroneous

Earthquakes occur without warning; however, it is claimed that some animals can feel earthquakes ( ) occurrences because of their highly sensitive organs.

Geologists are using modern technology to ______. A: help predict earthquakes B: enhance their reputations C: measure the accuracy of earthquakes D: control ground slippage

The United Nations' experts are supposed to ___ ___. A: construct strong buildings B: put forward proposals C: detect disastrous earthquakes D: monitor earthquakes

The government was plagued by leaks — a ______ of divisions and poor morale. A: synonym B: symptom C: synchronization D: syndication