Lec.16 Food Production Flashcards
What is the Neolithic?
- The time period 10 to 4.5 thousand years ,
- the youngest stone age,
- also when humans started farming.
What fraction of the population works on farms in the USA today?
2% or less
What is the down side of unsaturated fats?
They spoil faster.
What do the trends of fishing effort and catch in the lat 50 years tell us?
Massive increase in effort did not result in increased catch : unsustainable!
What are the advantages and disadvantages of fish farms?
Advantage: They produce fish without depleting wild fish stocks.
Disadvantage: They can spread disease to wild fish due to the high density of fish.
Why is wheat not grown in Indonesia?
Wheat does not grow well in tropical climates.
What is the limiting factor for producing nitrogen fertilizer?
The energy required for the fixation of N2 from air (fuel for heat and pressure).
Which three regions of the world are the major beef producers and exporters?
North America, South America and Australia
Which continent consumes most pigs?
East Asia
Which traded item is the whole meat trade similar to?
petroleum.
Which traded items have a higher global market: beef or illegal drugs?
Illegal drugs.
What is heparin?
A drug made from the mucosa of pig intestines that consists of sulfated polysaccharides.
- It is the most used drug and is used to prevent blood clotting.
What is the role of Heparin in modern medicine?
Modern medicine would not be possible w/o it
What is the origin of the word collagen?
Where glue comes from.
How can you generate energy from urban food waste?
Composting and generation of methane.
