End-Triassic extinction, also called Triassic-Jurassic extinction, global extinction event occurring at the end of the Triassic Period (252 million to 201 million years ago) that resulted in the demise of some 76 percent of all marine and terrestrial species and about 20 percent of all taxonomic families.
Its due mass wasting by a process called creep which is slow gradual ,movement of soil
True. The Sahara desert divides Africa into north and south.
California or Idaho, it depends on what states you are calling western states
<span>tsunamis,volcanoes,destructive earthquakes and hurricanes </span>
