The diagram below shows the layers of a rock having an ammonite
rock
organism key
which statement about the rock fossils is true?
fossil y is older than fossil x
fossil z is younger than fossil y
fossil z existed over many periods of time
fossil y existed during the same period as the ammonite

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

Under which condition below would u expect a coarse-grained intrusive rock like diorite to form?

How did the environment influence settlement patterns in colonial america? * 1 point a. early settlers stayed near rivers for farmland and transportation b. early settlers stayed in hilly areas to avoid frequent floods in coastal areas c. early settlers quickly moved to the mountains to avoid hot summers d. early settlers only lived on coastal islands to prevent indian attacks