Answer For Review Questions For Global Population Growth And Food Production Test

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1. 6.4 billion

2. Maximum population that can be supported by available resources

3. maximum population that can be maintained at an acceptable standard of living.

4. 50 billion

5. 1. 6.4 billion

2. Maximum population that can be supported by available resources

3. maximum population that can be maintained at an acceptable standard of living.

4. 50 billion

5. 1 box rich, 2 box poor, large gap

6. 2 rich box (1 new one, China), 2 poor, 2-3 box in middle (emerging economy) more of a continium between rich and poor but gap still as wide


7. 2 rich box, 2 new rich box, 3 middle box, 4 poor, child survival rate must increase for poor

8. Only way we can have enough resources is child survival rate increase (will have less children) and switching over to Green technology (renewable energy, conservation, etc.)


9. 20X (20 times)


10. 2X (two times)


11. Farming and meat production (raising animals for food)


12. Almost no freshwater left now, not even talking about in the future when he have alot more people.


13. 3X (three times)


14. They would consume 3 Earth of resources


15. Hydroponics - the growing of plants in a solution of nutrients necessary for plant growth, rather than directly in soil

16. Media is the material (made up of the substrate) that the plant/roots are anchored to when growing. Material for media include Perlite, Vermiculite, coconut fiber, volucanic rock, Pro-mix, Oasis cube (just pick 2 to memorize)


17. a) Wick system - nutrients are brought up from a reservior below via wicking process
b) Water Culture - plants float on surface of nutrient container via styrofoam and roots grow in nutrients c)Ebb and Flow - nutrient reservior below plant/media and nutrient fill up media container for a period of time and then drain back to nutrient reservior)
c) Drip system - Nutrient are pumped from nutrient container to top of media (drip into) and allowed to drain back to reservior or not
d) Nutrient Film Technique (NET) - Nutrient is pumped to top of pipe and nutrient allowed to flow down (in a film at bottom of pipe) to reservoir via gravity, plant are immobilized near top of pipe and roots are in film.
e) Aeroponic - Nutrient is pumped through a mister where mist goes onto roots of plant, plant are immobilized.



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