Regions are changing constantly. When two people group places together into a region, they might do it differently. What region of the United States do you live in? In a short paragraph, describe your region and write about three distinguishing characteristics it possesses. I live in eastern Pennsylvania USA

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

What body of water is the second cataract of the nile river submerged under

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