Nonrenewable means capable of growing back or being replaced

Nonrenewable resources are natural resources that are not naturally replenished once they have been used. Nonrenewable resources can be used up completely or consumed to such a degree that they become economically inaccessible

Explanation:

A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas, and coal are considered nonrenewable resources, as their use is not sustainable because their formation takes billions of years.