How does the creation of oil demonstrate conservation of mass?

The mass of oil formed during the process of formation of oil is equal to the mass of plant and animal remains that form the oil.

Fossil fuels are found deep in the earth's crust. They are usually mined for the purpose of energy generation.

These fossil fuels were formed underground after millions of years under very high pressure and temperature from the remains of many plants and animals.

Since mass is neither created nor destroyed according to the law of conservation of mass, the mass of oil formed during the process of formation of oil is equal to the mass of plant and animal remains that form the oil.

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good thing- during decomposition the organic molecules in organic matter are broken down into simpler organic molecules that require further decomposition or into mineralised nutrients

bad thing- it can be harmful in crop productivity