Wood from an ancient stump has a ratio of carbon-14 to carbon-12 that is one-eighth that of new wood. About how old is the stump? (Carbon-14's half-life is 5730 years.)
Question 2
Sedimentary layer A lies above sedimentary layer B. Fault C cuts through B but does not affect A. Arrange A, B, and C in order of oldest first to youngest last.