A non-renewable resource, like Coal is

Question

BlackTom AI · Accepted Answer

A non-renewable resource is one that exists in finite quantities and cannot be replenished on human timescales. Coal forms from the burial and alteration of plant material in specific sedimentary environments over millions of years, so its natural formation rate is vastly slower than the rate at which humans extract and burn it.

Step-by-step reasoning:
1. Definition: Non-renewable resources (like coal, oil, and natural gas) are consumed faster than they are naturally produced; therefore they are limited.
2. Formation and timescale: Coal originates from ancient peat deposits subjected to heat and pressure over geological time (tens to hundreds of millions of years). Because formation requires such long timescales, coal resources cannot be restored within human lifetimes or even many human generations.
3. Geographic distribution: Coal accumulates in particular sedimentary basins where past climates and depositional environments favored large plant growth and preservation. These basins are the result of specific geological histories, so coal is concentrated in certain regions (for example, large reserves exist in the United States, Russia, China, India, Australia, and South Africa) rather than being evenly spread over the globe.
4. Conclusion from steps: Combining limited supply and localized geological occurrence yields the statement that coal is “limited and found distributed unevenly around Earth.”

Why the other options are incorrect:
- "Unlimited and found all over Earth" is wrong because coal is not renewable and therefore not unlimited.
- "Limited and found all over Earth" is incorrect because, although coal is limited, it is not present everywhere; its occurrence depends on specific geological conditions, so it’s unevenly distributed.

Therefore, the correct description is: "Limited and found distributed unevenly around Earth," which matches the provided answer.

A non-renewable resource, like Coal is 单项选择题

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