Question

If the sun is the ultimate source of energy, then how can the energy in fossil fuels be said to have come from sun?

• A. Fossils fuels were transported from Sun to Earth millions of years ago.
• B. All the fossil fuels have come from biomass and biomass is a result of photosynthesis, which uses the solar energy.
• C. The heating effect of sun rays convert rocks into fossil fuels.
• D. None of the above.

Answer 1

The correct option is B All the fossil fuels have come from biomass and biomass is a result of photosynthesis, which uses the solar energy.

Fossil fuels have formed from the dead remains of the living beings which were buried inside the Earth crust for millions of years. The living beings are made up of biomass. The biomass can only be produced by photosynthesis which is a chemical reaction which takes place in plants in presence of sunlight. Without sunlight, there would be no biomass and hence no fossil fuels.