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NRAHI Top 1 Exp 1-3
| Term | Definition |
|---|---|
| natural resource | anything naturally occurring in the environment that humans use |
| nonrenewable resource | a natural resource that is not replaced in a useful time frame |
| fossil fuel | energy-rich substance formed from the remains of organisms |
| nuclear fission | the splitting of an atom's nucleus into two nuclei, which releases a great deal of energy |
| impact | a forceful, damaging contact |
| mineral | a naturally occurring solid that can form by inorganic processes and that has a crystal structure and a definite chemical composition |
| ore | a naturally occurring mineral from which a metal or a valuable mineral can be extracted |
| solution | a mixture of water and another substance |
| scarce | to be insufficient or in short supply |
| groundwater | water that fills the cracks and spaces in underground soil and rock layers |
| porous | having tiny holes or spaces through which liquid or gas may pass |
| aquifer | an underground layer of rock or sediment that holds water |
| renewable resource | a resource that is either always available or is naturally replaced in a relatively short time |