Question

Coal and petroleum are formed from ________.

• A. Dead remains of vegetation in sedimentary layers
• B. Dead remains of sea-living organisms in sedimentary layers
• C. Dead remains of organism in metamorphic layers
• D. Both (1) and (2) are true

Answer 1

The correct option is D Both (1) and (2) are true

• Coal and petroleum are formed from remains of dead vegetation and marine organisms.
  
• These are carbonaceous fuels. These are extracted from earth and are formed by fossil decomposition and are hence called fossil fuels. These fuels form major source of energy.