It is a mold fossil
Mold
Coal
fossil is organic
Coal is a fossil fuel found in solid rock form that is obtained through mining. It is formed from the remains of plants that lived millions of years ago and is a major source of energy worldwide.
a cast fossil
Fossil fuels are typically found in sedimentary rocks. These rocks are formed from the accumulation and lithification of sediments, which contain organic matter that can be transformed into fossil fuels like coal, oil, and natural gas.
Coal is a solid fossil fuel. It forms from the remains of plants that lived and died millions of years ago, and it is mined for energy production.
A palmitin is a solid crystallizable fat found in animal and vegetable tissues which is a glyceride of palmitic acid.
Ancient plant remains are buried and compacted until they form fossil fuels. There are 3 types of fossil fuels: Natural Gas Oil and Coal; the only solid fossil fuel, which is what you're looking for.
Natural gas is a fossil fuel derived from organic matter such as plant and animal remains, while coke is a solid carbonaceous material produced from coal. Therefore, natural gas is not an example of coke.
Coal is a solid fossil fuel that forms from the remains of plants that lived millions of years ago. When burned, coal releases energy in the form of heat, making it a significant source of power generation worldwide.
Coal is the solid fossil fuel formed from the remains of swamp plants that grew millions of years ago.