Across
- 4. the practice of using groundwater faster than recharge replaces it, particularly when watering crops
- 5. an underground layer of rock containing groundwater
- 8. a region on Earth that experience a variety of geoscience activity
- 11. any natural process that happens to Earth's surface, such as weathering, erosion, or plate tectonics
Down
- 1. a resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption
- 2. materials, such as minerals or water, that are naturally occurring on Earth
- 3. the way in which something is spread over an area
- 4. water that collects on tiny, interconnected, spaces between soil particles and in cracks that run through underground rocks
- 6. an element that is shiny and that conducts heat and energy
- 7. a naturally occurring substance that takes a solid, crystal form and is made of only a single type of compound
- 9. resources that are naturally replenished
- 10. rain or melted snow that trickles down Earth's surface and into an aquifer