Renewable resources are natural resources that have the capacity to regrow or replenish their original levels after exploitation, within a human timescale. However, this capacity also hinges on responsible resource management. Overwithdrawal of renewable resources such as water, wood or food can result in levels beyond which their regeneration is impossible.(1) The term renewable resources is often used in connection with renewable sources of energy, such as solar, wind or geothermal power.