REZA PAKRAVAN

3. A hole or tunnel in the ground made by an animal
5. Keeping animals and growing plants for food
8. An animal that feeds on plants only
9. A natural science concerned with the study of life and living organisms
10. Instrument for measuring atmospheric pressure
12. Any substance necessary to life and growth
13. A microorganism which can grow only in other cell
15. An animal that naturally feeds and possibly kills on others
16. The maximum amount a container can hold
18. A small or medium size woody plant
19. An atmospheric temperature of below freezing point,resulting in a coating of ice
20. To become bad or be slowly destroyed

1. Make a word shorter
2. To change from a solid or liquid state into vapor,usually by heat
4. The use of water agriculture in order to help crop growth,especially in dry areas
6. A material that change the color of reflected light by absorbing selected wavelength
7. The wearing away of topsoil by water,wind or intensive farming
11. Produce new organisms of the same kind
14. Small opening as in a plant leaf especially for the passage of fluid or air
16. An orange vegetable root crop
17. A structured collection of similar cells
20. A regulated amount and mix of food to be consumed