Fossil fuels are obtained from:
(a) remains of non-living materials.
(b) dead remains of birds only.
(c) dead remains of insects only.
(d) dead remains of living organisms.
NCERT Class VIII
Science - Exemplar Problems
Chapter 5. Coal and Petroleum
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(d) dead remains of living organisms.
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Fossil fuels are obtained from dead remains of living organisms . So, Option (d) is correct .
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