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. _________ is derived from ancient swamps and bogs, where standing water prevented decay and allowed plant matter to accumulate and _________ is derived from plankton and algae, mixed with mud and sand on ancient sea beds.

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Answer: Coal is derived from ancient swamps and bogs, where standing water prevented decay and allowed plant matter to accumulate and oil is derived from plankton and algae, mixed with mud and sand on ancient sea beds.

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User Meghna
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