Which is an example of an inherited trait? a knowing how to add b building muscle tone c becoming a piano player d having a round face

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?