$(a)$ Why are coal and petroleum called fossil fuels?
$(b)$ Name any two elements present in fossil fuels in addition to carbon.
$(b)$ Name any two elements present in fossil fuels in addition to carbon.
(N/A) Coal and petroleum are called fossil fuels because they are formed from the buried remains of ancient plants and animals that lived millions of years ago,which have been subjected to high pressure and temperature over geological time.
$(b)$ Two elements present in fossil fuels in addition to carbon are Hydrogen and Sulphur (or Nitrogen).
$(b)$ Two elements present in fossil fuels in addition to carbon are Hydrogen and Sulphur (or Nitrogen).
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