Statement 1: Coal petroleum, natural gas all comprises fossil fuels.
Statement 2: They are called fossil as they are made from dead remains of organic matter.
Statement 1 and statement 2 are correct, statement 2 is the reason for statement 1.
Coal petroleum, natural gas all comprises fossil fuels and they are called fossil as they are made from dead remains of organic matter. When the dead remains are buried deep under the earth, with huge pressure and temperature it gets converted to fossil fuels.