Question

The possibilities of presence of coal or fossil fuels in a particular area can be guessed by the study of

• A. Protozoans
• B. Pollen grains analysis (paleobotany)
• C. Both of the above
• D. Sulphur cycle

Answer 1

The correct option is D Sulphur cycle

The large annual input of sulfur from burning of coal and other fossil fuels adds a substantial amount SO${}_2$, which acts as an air pollutant. Hence, the presence of sulfur in any area indicates the high level of coal or fossil fuel burning there.

So, the correct answer is option D.