| 11. | This is based on the theory of nonrenewable resources.
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| 12. | We are saving nonrenewable resources with longer days,
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| 13. | The higher the per capita industrial output, the higher the nonrenewable resource consumption.
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| 14. | Thus a renewable resources becomes a nonrenewable one.
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| 15. | Helium is not only expensive in large quantities but is also a nonrenewable resource.
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| 16. | Of course, these oils are distilled from crude petroleum, a nonrenewable natural resource.
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| 17. | Most artificial trees are made in China using PVC plastic, which requires nonrenewable petroleum.
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| 18. | Many experts believe that fossil fuels and other nonrenewable energy sources contribute to global warming.
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| 19. | The model combines all possible nonrenewable resources into one aggregate variable, nonrenewable _ resources.
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| 20. | The model combines all possible nonrenewable resources into one aggregate variable, nonrenewable _ resources.
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