A friend tells you he witnessed books and other objects falling off his bookcase during an earthquake. What was the magnitude of this earthquake

Why slip off slopes are found on the inside of meanders? why river cliffs are found on the outside of meanders?

The graph below plots the temperature and luminosity of stars on the main sequence.

Chris lives in a city that experiences heavy rainfall with average annual precipitation of 882 millimeters. it is warm all year. mark lives in city with an average annual rainfall of 40 millimeters. it has hot summers and cool winters. chris's city is in a climate, while mark's city is in a climate.