有限资源与回收利用
Finite Resources & Recycling
解释许多原材料（金属、化石燃料、矿物）都是有限资源，说明开采这些资源的环境代价，并评估回收利用和循环经济的益处。
Explain that many raw materials (metals, fossil fuels, minerals) are finite resources, describe the environmental costs of extraction, and evaluate the benefits of recycling and the circular economy
学习证据 / Evidence
- 能识别有限自然资源的例子，并解释它们为什么是有限的。
- 能描述采矿和化石燃料开采对环境的影响。
- 能解释与从矿石中提炼金属相比，回收金属为什么更节能。
- 能讨论回收成本与资源保护效益之间的权衡。
- Identifies examples of finite natural resources and explains why they are finite
- Describes the environmental impact of mining and fossil fuel extraction
- Explains why recycling metals saves energy compared to extraction from ores
- Discusses trade-offs between the cost of recycling and the benefit of resource conservation
评估问题 / Assessment
如果{{name}}正在决定是回收一个铝制饮料罐还是把它扔掉，{{name}}能否解释从零开始制造新铝需要哪些过程，以及为什么回收铝罐所耗能量要少得多？
If {{name}} was deciding whether to recycle an aluminium drinks can or throw it away, could they explain what goes into making new aluminium from scratch — and why recycling it uses much less energy?