The economic problem — Edexcel A-Level Economics A
Verified courseTeaching note checked against the official specification.
The economic problem explained
This specification point requires you to classify the natural resources used in production as either renewable or non-renewable and to explain the basis of that distinction.
Read the full explanation
Renewable resources, such as solar energy, wind, timber and fish stocks, can be replenished naturally over time, so their use need not exhaust the stock provided the rate of extraction stays within the rate of regeneration. Non-renewable resources, such as coal, oil, natural gas and mineral ores, exist in finite stocks that are not replaced on a human timescale, so every unit consumed reduces what remains. The key distinction is therefore the rate of replenishment relative to the rate of use, not simply whether a resource is natural. A renewable resource can still be depleted if it is harvested faster than it regenerates, and a non-renewable resource can be used slowly, but its total stock is still fixed.
Your focus
- Classify given resources as renewable or non-renewable using the rate of replenishment as the criterion.
- Explain why a renewable resource can still be depleted if extraction exceeds regeneration.
- Identify examples of renewable and non-renewable resources in multiple-choice scenarios.
The economic problem exam tips
Marking Points
- Renewable resources are replenished naturally over time, so sustainable use keeps the stock available for the future.
- Non-renewable resources have finite stocks that are not replaced on a human timescale, so consumption permanently reduces the remaining quantity.
- The distinction depends on the rate of regeneration compared with the rate of extraction, not merely on whether the resource occurs in nature.
- A renewable resource can become depleted if extraction exceeds regeneration, for example overfishing or deforestation.
- Examples of renewable resources include solar energy, wind, timber and fish stocks; examples of non-renewable resources include coal, oil, natural gas and mineral ores.
Examiner Tips
- 💡Read each option and ask whether the stock is replaced on a human timescale; eliminate options that confuse natural with renewable.
- 💡Watch for distractors that describe a renewable resource being used unsustainably, because depletion is still possible and does not make the resource non-renewable.
- 💡Anchor your answer in the rate of regeneration versus the rate of use, which is the precise basis of the distinction.
Common Mistakes
- Assuming all natural resources are renewable: the correction is that natural occurrence does not guarantee replenishment, so coal and oil are natural but non-renewable.
- Treating renewable resources as automatically inexhaustible: the correction is that overuse can exhaust even a renewable stock if extraction outpaces regeneration.
- Confusing non-renewable with man-made: the correction is that non-renewable describes a finite natural stock, not whether humans have processed the resource.