Which of the following is not true about streams? a. all streams flow downslope b. tributaries are smaller streams c. all streams flow into the ocean d. a large stream is called a river

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