Which type of resource needs to be managed carefully to prevent depletion?

The type of resource that needs to be managed carefully to prevent depletion is non-renewable resources. These resources, such as fossil fuels and minerals, exist in finite quantities and cannot be replenished on a human timescale. Once they are extracted and used, they cannot be replaced, which makes their management crucial to ensure they are available for future generations.

Sustainable resources, on the other hand, are designed to be used in a way that maintains their availability over time, allowing for their use without significant depletion. Flow resources, such as wind and solar energy, are renewable and naturally replenished, meaning they don't face the same risk of depletion as non-renewable resources do.

In essence, effective management practices must focus on non-renewable resources to extend their lifespan and mitigate the risks associated with their over-extraction.