Unit 5 Food

1. A natural earthy material that is plastic when wet
4. farming A system of rearing livestock using intensive methods
8. A person interested in eating food that is locally produced
9. Chemical substance produced and released into the environment by an animal,especially a mammal or an insect
12. Proteins,carbohydrates, lipids
13. A way of growing crops or pasture from year to year without disturbing the soil through tillage
15. The activity or business of felling trees and cutting and preparing the timber
17. extreme Scarcity of food.
20. The practice of tilling sloped land along lines of consistent elevation
23. Process of eroding by wind,water,or other natural agents
24. Unit for measuring the amount of energy food provides

2. Plant crops in strips or alleys between shrub or trees
3. A fertile soil of clay and sand containing humus.
5. To graze (land) to excess
6. The supply of water to land or crops to help growth, typically by means of channels
7. The process by which fertile land becomes desert
10. Deficiency of protein and other key nutrients in diet
11. Capable of producing crops; suitable for farming
14. Supply energy for cellular processes
16. Matter that has come from a recently living organism
18. The organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms.
19. Supply energy for cellular processes
21. A substance required in relatively large amounts by living organisms, in particular
22. A destructive insect or other animal that attacks crops, food, livestock, etc.