Which kind of material would be prone to liquefaction during an earthquake?
a. water-saturated sand
b. dry compacted clay
c. sedimentary rock with horizontal layering
d. volcanic rock that is very porous?

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction