a diagram of seven rock layers is shown. the diagram represents a section of earth that a paleontologist, a…

a diagram of seven rock layers is shown. the diagram represents a section of earth that a paleontologist, a scientist who studies fossils, has been working with for years. which statement correctly describes this diagram? layer w contains fossils of organisms that existed on earth after the organisms found in layers u and r. layer u contains fossils of organisms that are older than the organisms found in layer r. layers w and u contain fossils that are animal species. layers r and w contain fossils that are both types of plant species
Answer
Brief Explanations:
In geology, the principle of superposition states that in an undisturbed sequence of sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top. Layer W is above layers U and R, so fossils in layer W are from organisms that existed after those in layers U and R. Layer U is above layer R, so fossils in layer U are younger than those in layer R. There is no information given about whether the fossils are of animal or plant species.
Answer:
Layer W contains fossils of organisms that existed on Earth after the organisms found in layers U and R.