Across
- 2. the use of genetic engineering to increase the value of products
- 5. the use of both biological and chemical methods to control pests safely and economically
- 7. the buildup of salts in the surface layers of soil
- 10. a loss of more than 10 percent in the productivity of soil due to erosion, deforestation, overgrazing, drought, or other factors
- 11. a shortage of essential nutrients
- 12. allowing animals to eat so much of the plant cover in a field or pasture that the plants cannot regrow
- 13. a huge warehouse or pen designed to deliver energy-rich feed to livestock or poultry; also called concentrated animal feeding operations (CAFOs) or factory farms
Down
- 1. a chemical used to kill organisms that attack or compete with plants that humans value
- 3. using a source other than precipitation to water crops
- 4. the amount of a crop produced in a given area
- 6. an insect or other animal that transfers pollen from one plant to another
- 8. the raising of aquatic organisms for food in a controlled environment
- 9. an organization that preserves the seeds of diverse plants in case of a global crop collapse