Plz ! will fan and like: ) the diagram below shows the layers in a rock having a brachiopod: which statement about the rock fossils is true? organism x existed for a short period of time. organism y became extinct before organism x. organism x and organism y existed at the same time. organism z became extinct much before organism x.

A, organism X existed for a short period of time. The organism is only found within a specific layer and never seen again. That is, I'm assuming Z is near the top of the time scale. 

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the