Across
- 2. the surface layer of the soil, which is usually richer in organic matter than the subsoil is
- 4. a poison used to destroy pests, such as insects, rodents, or weeds
- 5. a disorder of nutrition that results when a person does not consume enough of each nutrients that are needed by the human body
- 6. domesticated animals that are raised to be used on a farm or ranch
- 9. describes organisms that have been bred and managed for human use
- 10. a mixture of decomposing organic matter, such as manure and rotting plants, that is used as fertilizer and soil conditioner
- 11. the accumulation of salts in soil
- 12. a process in which the materials of Earth's surface are loosened, dissolved, or worn away
- 14. the type and amount of food that a person eats
- 15. a cud-chewing-mammal that has a three or four chamber stomach
- 16. the amount of crops produced per unit area
Down
- 1. the process by which human activities or climatic changes make arid or semiarid areas more desert like
- 3. the use of certain organisms by humans to eliminate or control pest
- 7. the raising of crops and livestock for food or for other products that are useful to humans
- 8. widespread malnutrition and starvation in an area due to a shortage of food, usually caused by a catastrophic event
- 13. catching or removing from a population more organisms than the population can replace