GCSE's begin

Ksanti said:
It's in the specification so there's just as good a chance it's in this year. It's not that hard to work out if you have a clue what fish farming is, it's generally just "How is the environment in a fish farm suited to higher yields?" etc. which is pretty basic (or at least, it is now for me, given I wrote a page of notes on it just now :D)

  • Temps are controlled with heaters
  • Oxygen content is controlled with air pumps and encouraging growth of photosynthesising plants
  • Juvenile stock are kept away from adult stock to reduce intraspecific predation
  • Nets in open water prevent interspecific predation by birds etc.
  • Pesticides are used on food to prevent contamination (parisites)
  • Antibiotics are used in the food to prevent pathogens harming the stock
  • Water source is tested for chlorine, contamination or anything harmful to the stock
  • Waste removal is easier and tanks can be drained, cleaned and restored more easily
  • Selective breeding can be used to yield higher meat-content fish
  • Food can be given at regular intervals, with high quality, high protein content food to maximise growth

All pretty basic stuff if you just think about what the advantages would be, and in any case they only ever ask for 2 or 3 reasons anyway :)
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What boards thatfor.
 
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