Across
- 6. The planting of different crops in a field each year to maintain the soil's fertility.
- 9. "Fish Farming"
- 10. Breeding organisms with specific traits in order to produce offspring with identical traits. Unintendedly caused by the use of pesticides on pest populations.
- 11. of agriculture cultivation that usually exists in tropical areas where vegetation is cut close to the ground and then ignited. The fire introduces nutrients into the soil, thereby making it productive for a relatively short period of time. (3 words)
- 12. A type of mining that involves the removal of large portions of soil and rock, called overburden, in order to access the ore underneath.
- 13. Harvesting fish to the point that species are depleted and the value of the fishery reduced.
- 16. amount of a renewable resource that can be taken without reducing the available supply.
- 17. The worldwide campaign to increase agricultural production from the 1940s to 60s, stimulated by new fertilizers and strains of wheat.
- 20. A type of irrigation that uses perforated hoses to release small amounts of water to plant roots.
- 21. Suggests that individuals will use shared resources in their own self-interest rather than in keeping with the common good, thereby depleting the resources.
- 23. The turning-over of soil before planting. (i.e. plowing)
- 24. Sprayed on crops to increase nutrients and crop yield; contain nitrates and phosphates
- 26. Occurs when the salts in groundwater remain in the soil after the water evaporates. Over time, it can make soil toxic to plants.
- 30. Movement of people from rural areas to cities
- 31. Planting different types of crops in alternating bands or other spatially mixed arrangements.
- 32. A method of harvesting trees that involves removing all or almost all of the trees within an area.
Down
- 1. Increase in concentration of certain stable chemicals in successively higher trophic levels of a food chain or web
- 2. Method of forestry which you only cut trees of a certain type, size or quality
- 3. The process of supplying water to areas of land to make them suitable for growing crops. (70% of global water use)
- 4. Water that moves across the land surface and into streams and rivers, rather than soaking into the ground.
- 5. Method of fishing that involves pulling a fishing net through the water behind one or more boats.
- 7. Rock that contains a metal or economically useful mineral
- 8. The removal of trees faster than forests can replace themselves.
- 14. A type of irrigation that involves flooding an agricultural field with water.
- 15. The change in population distribution from high population density areas to low density suburbs that spread into rural lands, leading to potential environmental problems.
- 18. A type of irrigation that involves pumping ground water into spray nozzles across an agricultural field.
- 19. The cultivation of a single crop on a farm or in a region or country; a single, homogeneous culture without diversity or dissension.
- 22. Chemicals used on plants that do not harm the plants, but kill pests and have negative repercussions on other species who ingest the chemicals.
- 25. The loss of soil components, especially topsoil; usually caused by flowing water, wind, or both
- 26. The practice of digging shafts deep into the ground to find and remove a mineral (a type of mining)
- 27. Occurs when too many animals feed on a particular area of land. It causes loss of vegetation, which leads to soil erosion.
- 28. A synthetic organic compound used as an insecticide.
- 29. A food that is mostly products or organisms that have their genes altered in a laboratory for specific purposes, such as disease resistance, increased productivity, or nutritional value.