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Nonrenewable resources are natural resources that cannot be replenished within a human lifespan, such as fossil fuels (coal, oil, natural gas) and minerals. Once they are depleted, they cannot be easily replaced.
Carbon-based fuels formed from the remains of ancient plants and animals over millions of years.
Mineral Extraction: The process of extracting valuable minerals from the Earth's crust for various purposes.
Depletion Rate: The speed at which nonrenewable resources are being used up compared to their rate of formation.