1. Renewable Resources: These resources can be replenished naturally over a relatively short period of time. Examples include:

* Solar energy: Energy from the sun

* Wind energy: Energy from wind

* Hydropower: Energy from water

* Biomass: Organic matter used as fuel (wood, crops)

* Geothermal energy: Energy from heat within the Earth

* Water: Though water can be polluted, it is generally considered a renewable resource.

* Forests: Trees can be replanted and grow back.

2. Nonrenewable Resources: These resources are formed over millions of years and are finite, meaning they cannot be replenished at a rate comparable to their consumption. Examples include:

* Fossil fuels: Coal, oil, and natural gas

* Minerals: Iron, copper, gold, etc.

* Nuclear fuels: Uranium

It's important to note that some resources, like timber, can be considered both renewable and nonrenewable, depending on how they are managed.