Across
- 3. dependency ratio, ratio of people above working age (65+) to workforce of a country
- 5. cycle, also known as hydrological cycle
- 6. dioxide, waste product of respiration
- 10. ratio, ratio of population is a ratio of people who are generally not in the labor force
- 13. process by which moisture is carried through plants from roots to small pores
- 14. cycle, process for moving sulfur through rocks, water, soil, and living things
- 15. process of water cycle where gas turns to liquid
- 17. migration, difference of immigrants and emigrant of an area in a period of time divided per 1,000 inhabitants
- 18. atmospheric water vapor that falls under gravity
- 19. dependency ratio, ratio of people below working age (under 15) to workforce of a country
- 20. cycle, describes how carbon and oxygen continuously move between the atmosphere, oceans, land, and living things
Down
- 1. rate, the average number of children that would be born to woman over the lifetime
- 2. fixation, A natural phenomenon where the energy of lightning breaks the nitrogen into nitrogen oxides and is then used by plants
- 4. cycle, the slow process of biogeochemical cycle
- 7. waste product of photosynthesis
- 8. process by which green plants and some other organism use sunlight to synthesize foods from carbon dioxide and water
- 9. process of water cycle where liquid turns to gas
- 11. process of burning
- 12. the conversion of nitrogen compounds, such as ammonia, nitrite, or nitrate, into free nitrogen gas
- 16. rate, also known as death rate