What term describes resources that are not replaceable and take a long time to be naturally replenished?

The term that accurately describes resources that are not replaceable and take a long time to be naturally replenished is non-renewable. Non-renewable resources, such as fossil fuels (coal, oil, and natural gas) and minerals, exist in finite quantities on Earth. Once they are extracted and used, they cannot be replenished within a human timescale. The formation of these resources can take millions of years, making them a limited supply. This definition distinguishes them clearly as non-renewable resources in contrast to renewable resources, which can be replenished in a relatively short period.

The other terms have different meanings. Renewable resources, like solar and wind energy, are those that can be replenished naturally in a short time frame. Biodegradable materials are capable of being broken down by natural processes, while sustainable refers to practices that maintain resource availability over time without causing environmental harm.