Terms : Hide Images
| 4996433517 | Crustal Abundance | The average concentration of an element in Earth's crust. | 0 | |
| 4996433518 | Ore | A concentrated accumulation of minerals from which economically valuable materials can be extracted. | 1 | |
| 4996433519 | Metal | An element with properties that allows it to conduct electricity and heat energy, and perform other important functions. | 2 | |
| 4996433520 | Reserve | In resource management, the known quantity of a resource that can be economically recovered. | 3 | |
| 4996433521 | Strip mining | The removal of strips of soil and rock to expose ore. | 4 | |
| 4996433522 | Tailings | Unwanted waste material created during mining. | 5 | |
| 4996433523 | Open-pit mining | A mining technique that uses a large pit or hole in the ground, visible from the surface of Earth. | 6 | |
| 4996433524 | Mountaintop removal | A mining technique in which the entire top of a mountain is removed with explosives. | 7 | |
| 4996433525 | Placer mining | The process of looking for minerals, metals, and precious stones in river sediments. | 8 | |
| 4996433526 | Subsurface mining | Mining techniques used when the desired resource is more than 100 m (328 feet) below the surface of Earth. | 9 | |
| 4996433527 | Waste | Material outputs from a system that are not useful or consumed. | 10 | |
| 4996433528 | Throw-away society | A critical view of consumerism, overconsumption and excessive production of short-lived or disposable items. | 11 | |
| 4996433529 | Municipal Solid Waste | Garbage or trash consisting of everyday items that are discarded by the public. | 12 | |
| 4996433530 | Waste stream | The flow of solid waste that is recycled, incinerated, placed in a solid waste landfill, or disposed of in another way. | 13 | |
| 4996433531 | E-Waste | Electronic products nearing the end of their "useful life." | 14 | |
| 4996433532 | Source reduction | An approach to waste management that seeks to cut waste by reducing the use of potential waste materials in the early stages of design and manufacture. | 15 | |
| 4996433533 | Reuse | Using a product or material again when it was intended to be discarded. | 16 | |
| 4996433534 | Recycling | The process by which materials destined to become municipal solid waste are collected and converted into raw material that is then used to produce new objects. | 17 | |
| 4996433535 | Closed-loop recycling | Recycling a product into the same product. | 18 | |
| 4996433536 | Open-loop recycling | Recycling one product into a different product. | 19 | |
| 4996433537 | Compost | A mixture of various decaying organic substances, such as dead leaves or manure, for fertilizing soil. | 20 |
