The total output of a star per second is its luminosity.
a. matter
b. energy
c. neutrino
d. visible light

Why is terracing used in southeast asian agriculture?

What could the united states of america do to improve their status? name at least 3(ap human geography)

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