In what region does a “yes” response have an ambiguous meaning

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

In what way does renewable energy differ form nonrenewable energy?

If we review the changes in the landscape surrounding the great salt lake in utah we can see a change in topography. look at the area to the south of the lake. what change has occurred during the last twenty-nine years? a) erosion of the hills b) an increase in marshland c) flooding of the area and the development of wetlands d) deposition of sediments and an increase in elevation