I'm not sure how to classify this question so i'll just put it under biology why would a biologist be interested in sedimentary rocks?

Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as clastic sedimentary rocks); by the accumulation and the consolidation of sediments; by the deposition of the results of biogenic activity; and by preipation from solution.

Paleontology is a part of biology and fossils can be found in sedimentary rocks.

The fundamental difference between capitalism and socialism is the ownership and control of the means of production. In a capitalist economy, property and businesses are owned and controlled by individuals. In a socialist economy, the state owns and manages the vital means of production.