Which model for city growth states that cities grow outward along transportation routes, forming shapes like spokes on a wheel?

Arid and semiarid subcategories are part of which climate

Compare the partition of southeast asia to the partition of africa how was it similar

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