Koalas eat of the 700 different types of eucalyptus trees. a. 455 b. 1 c. 25 d. 700

At a continent-continent convergence,

According ti the following map, what are the most common mineral resources found in the united states?

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