Final answer:
Fossil fuels like coal and oil are non-renewable resources because they take millions of years to form and cannot be rapidly replenished.
Step-by-step explanation:
Two non-renewable resources are fossil fuels like coal and oil. These resources are non-renewable because they take millions of years to form and cannot be rapidly replenished. The process of forming coal and oil involves the decomposition of organic matter over long periods of time. Once these resources are extracted and burned, they are permanently depleted.