Across
- 2. A line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period
- 5. Total food supply
- 8. A biological community of interacting organisms and their physical environment
- 12. A large naturally occurring community of flora and fauna occupying a major habitat (e.g. forest or tundra)
- 16. A native plant or animal that is restricted to a certain place
- 17. Organisms in which the genetic material (DNA) has been altered in a way that does not occur naturally by mating and/or natural recombination
- 19. The proportion of the incident light or radiation that is reflected by a surface
- 20. The region of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms
- 21. The quality or high degree of being saline
- 22. Movement and exchange of organic and inorganic matter back into the production of matter
- 23. The variety of life in the world or in a particular habitat or ecosystem
- 25. The supply of water to land or crops to help growth
- 28. Produced or involving production without the use of chemical fertilizers, pesticides or other artificial agents
- 29. An act of seizing land in an opportunistic or unlawful manner
Down
- 1. The cultivation of a single crop in a given area
- 3. Simple procedure that involves not planting the same crop in the same soil for a period of years
- 4. Also known as the water cycle, it is the normal water recycling system on earth
- 6. A large increase in crop production in developing countries achieved by the use of fertilizers, pesticides and high-yield crop varieties.
- 7. The angular distance of a place north or south of the earth’s equator, or of a celestial object north or south of the celestial equator, usually expressed in degrees and minutes
- 9. Is a general term for the radiation emitted by the sun
- 10. A state of balance between continuing process in the biome
- 11. The weather conditions prevailing in an area in general over a long period of time
- 13. Avoidance of the depletion of natural resources in order to maintain balance an ecological balance
- 14. Unit of measurement of air pressure
- 15. Plowed and harrowed farmland, but left unsown for a period in order to restore fertility as part of a crop rotation or to avoid surplus production
- 18. When all people, at all times, have physical, social and economic access to sufficient, safe and nutritious food to meet dietary needs for a productive and healthy life.
- 24. Agriculture conducted on commercial principles, especially using advanced technology
- 26. The rearing of aquatic animals or the cultivation of aquatic plants for food
- 27. Make or form (sloping land) into a number of level flat areas resembling a series of steps