Based on the seismograph measurements in the image, where is the epicenter of this earthquake? Portland, OR
Salt Lake City, UT
San Francisco, CA
Los Angeles, CA

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

In which part of the body is a ball-and-socket joint found?