Which idea did ptolemys model use to explain why the planets

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water

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

Select the natural regions. delta denver forest georgia north america plateau stream