Which of the following was not a reason that most members of immigrant
families had to get a job?

What is the main idea of the text: hammurabi's code

Which of the following terms describes the layers of air surrounding the earth ?

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