Examlex
It is not necessary for every society to have an economic system.
Conservation
The practice of protecting natural resources and the environment through preservation, management, and restoration efforts to prevent degradation.
Crude Oil
A natural, unrefined petroleum product composed of hydrocarbon deposits and other organic materials.
Distillation
A process of separating components from a liquid mixture by selective boiling and condensation, commonly used in the purification of water, alcohol, and chemicals.
Hydrocarbon
is an organic compound consisting entirely of hydrogen and carbon atoms, commonly found in fossil fuels and as the basis of various organic substances.
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