Multiple choice

Petroleum is formed from

  1. domestic animals

  2. organisms in sea

  3. wild animals

  4. insects

  5. birds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Crude oil or petroleum is found deposited under the sea. It is fossil fuel.  As these organisms died, their bodies settled at the bottom of the sea and got covered with layers of sand and clay. Over millions of years, absence of air, high temperature and high pressure transformed the dead organisms into petroleum and natural gas.

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