A certain location has experienced several earthquakes in past centuries. What can be said about future earthquakes in this region?

Future earthquakes are unlikely because all the weak rocks in that location are broken and only stronger ones are left.
Future earthquakes are likely because underground stress builds up in similar locations.
Future earthquakes are likely because rocks in some places on Earth are generally weaker and liable to break.
Future earthquakes are unlikely because all the underground stress in that location has been

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative