The map shown was published in the United States in the early twentieth century. The title of the map is an example of
assimilation
cultural relativism
acculturation
cultural diffusion
ethnocentrism

In what climate does shifting cultivation predominate? and, what are its two characteristics?

What are the answers for the following questions?

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