Seismic waves that are the result of the combination of other seismic waves are

In what country/region do women comprise part of national government than anywhere else in the world?

How do convection currents form underwater mountains?

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks