Final answer:
Sedimentary rocks that come from the remains of living organisms are called organic sedimentary rocks. These include resources like coal, oil, and natural gas, all formed from organic material deposits.
Step-by-step explanation:
Sedimentary rocks formed from the remains of once-living things are known as organic sedimentary rocks. These rocks are a result of the accumulation and lithification of organic material such as leaves, plant matter, and the remains of animals. Organic sedimentary rocks include substances like coal, oil, and natural gas, which are derived from the buildup of ancient organic matter. Options like detrital, chemical, and metamorphic do not describe rocks formed from organic remains. Detrital rocks are composed of fragments (clasts) of pre-existing rocks, chemical sedimentary rocks form from solutions becoming supersaturated and precipitating inorganically, and metamorphic rocks are existing rocks that have been transformed by heat and pressure.