How do renewable resources differ from non-renewable resources?

Renewable resources are defined by their ability to be replenished naturally over time. This means that they can regenerate within a human lifespan or through natural processes, leading to sustainable use without depleting the resource. Examples include solar energy, wind energy, and biomass, all of which can be utilized repeatedly as their sources—like sunlight and wind—are continuously available. In contrast, non-renewable resources are those that exist in finite amounts and are consumed faster than they can be replenished. This group includes fossil fuels, minerals, and nuclear fuels, which can take millions of years to form and therefore cannot be quickly restored once depleted.

The other choices present misunderstandings about the nature of renewable and non-renewable resources. For instance, renewable resources are not confined to urban areas, nor do they include fossil fuels, which are non-renewable. The distinction lies in the replenishment capacity of the resources, which is the critical factor that defines their classification.