GEOLOGY

Detailed explanation-1: -Organic sedimentary rocks are formed as a result of the decomposition of dead plants and animals. It contains fossils and some examples include chalk, limestone, coal, and dolomite.

Detailed explanation-2: -Organic detrital rocks form when parts of plants and animals decay in the ground, leaving behind biological material that is compressed and becomes rock. Coal is a sedimentary rock formed over millions of years from compressed plants.

Detailed explanation-3: -Organic sedimentary rocks form from the accumulation and lithification of organic debris, such as leaves, roots, and other plant or animal material. Rocks that were once swampy sediments or peat beds contain carbon and are black, soft, and fossiliferous.

Detailed explanation-4: -Organic-rich sedimentary rocks are a specific type of sedimentary rock that contains significant amounts (>3%) of organic carbon. The most common types include coal, lignite, oil shale, or black shale.

Detailed explanation-5: -Organic sedimentary rocks are formed when large number of living things die and compressed and cemented to form rocks.