Question

how do renewable and nonrenewable resources differ?
renewable resources are artificial.
nonrenewable resources are artificial.
renewable resources replenish within our lifetime.
nonrenewable resources replenish within our lifetime.

Explanation:

Renewable resources can replenish within a human - relevant time frame (like our lifetime). Non - renewable resources, such as fossil fuels, take millions of years to form and do not replenish within our lifetime. Also, both renewable and non - renewable resources are natural (not artificial).

Answer:

Renewable resources replenish within our lifetime.