What is the difference between a renewable and nonrenewable resource?

What is the difference between a renewable and nonrenewable resource?

• A. Renewable resources can be replenished only through human-made processes
• B. Renewable resources are always man-made; nonrenewable are natural
• C. Renewable resources replenish naturally in a short time; nonrenewable resources are finite
• D. Renewable resources are found only in oceans; nonrenewable resources are in land

Answer: (C)

The key idea is how fast a resource can come back once it’s used. Renewable resources are naturally replenished on a timescale that matches or is shorter than human lifetimes—sunlight, wind, flowing water, and biomass can continually renew themselves if we use them wisely. Nonrenewable resources, however, were formed over millions of years and exist in finite amounts; once we’ve used them, new supplies aren’t available on human timescales. So the statement that renewable resources replenish naturally in a short time while nonrenewable resources are finite best captures this difference. Some renewable sources can be overused or degraded if not managed properly, and nonrenewables can be found on land as well as in oceans, but the core distinction rests on the replenishment time and remaining quantity.

The key idea is how fast a resource can come back once it’s used. Renewable resources are naturally replenished on a timescale that matches or is shorter than human lifetimes—sunlight, wind, flowing water, and biomass can continually renew themselves if we use them wisely. Nonrenewable resources, however, were formed over millions of years and exist in finite amounts; once we’ve used them, new supplies aren’t available on human timescales. So the statement that renewable resources replenish naturally in a short time while nonrenewable resources are finite best captures this difference. Some renewable sources can be overused or degraded if not managed properly, and nonrenewables can be found on land as well as in oceans, but the core distinction rests on the replenishment time and remaining quantity.