Multiple choice

Which of these conditions is most important for the formation of petroleum?

  1. Oxygen saturation

  2. Abiotic

  3. Anoxic conditions

  4. Dead zones

  5. Anthropogenic impact
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Petroleum is a fossil fuel derived from ancient fossilised organic materials, such as zooplankton and algae. Vast quantities of these remains settled  in sea or lake bottoms, mixing with sediments and being buried under anoxic conditions.

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