natural sources
Non-synthetic material origins
Natural sources are origins or supplies that occur in nature without human manufacture.
The phrase typically appears in discussions of energy, materials, or nutrients: Sunlight and wind are natural sources of renewable energy.
It often contrasts with synthetic or artificial alternatives: The vitamin comes from natural sources rather than a laboratory.
- solar energyHarnessed stellar radiation
- fossil fuelsCombustible prehistoric organic deposits
- plantsPhotosynthesizing rooted organisms
- wind powerTurbine-generated renewable electricity
- aquifersWater-bearing rock formations
solar radiation · ocean currents · biomass · coal deposits · rare earth elements · animals · algae · freshwater lakes · spring water · bacteria · fungi · mineral springs · hydropower · river basins · igneous rocks · nitrogen fixation · geothermal heat · tidal energy
- arsenic pollutionarsenic, arsenic poisoning, groundwater pollution, water contamination, drinking water
- mercury pollutionmercury poisoning, mercury exposure, mercury vapor, methylmercury, mercury contamination
natural sourcesfactories
Industrial production facilities
laboratories · labs · manufacturing plants · chemical synthesis · chemical plants
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