Natural Resources - Materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain, Renewable Resources - Any natural resource that can replenish itself in a relatively short period of time, usually no longer than the length of a human life., Nonrenewable Resources - A natural resource that is not replaced in a useful time frame., Fossil Fuels - Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals., Petroleum/Oil - A Fossil Fuel that originally came from ancient sea life, Natural Gas - a fossil fuel found deep underground; a hydrocarbon gas mixture consisting primarily of methane, Coal - A fossil fuel that originally formed from ancient plants (ferns) in a pond environment, examples of renewable resources - water, trees, animals, and sun, examples of non renewable resources - gold, rocks, soil and diamonds, Renewable resources problems - Ecological disruption and costly, Non renewable resources problems - Green house effect and toxic spills,

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