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What is a maximum sustainable yield?
the size of a natural population at which it produces a maximum rate of increase, typically at half the carrying capacity.
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eraser
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seesaw
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fairy
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lifesaver
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What is a sustainable yield?
The number of individuals in a population that can be harvested without reducing the size of the population or letting it grow
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What is a longline?
floating mainlines extending for 100km on the ocean surface, mainline has 2000 vertical lines with baited hooks.
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heart
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fairy
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baam
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what is happening in this picture and why?
horseshoe crab blood is harvested because it will clot when it detected bacterial toxins. It is used to check sterility in vaccines
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Why do we look for Tuna that says "dolphin safe"?
when a pod of dolphins was spotted, there would be a school of yellow fin tuna right below them, so a net was used to catch the tune (and dolphin)
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What is the difference between mariculture and aquaculture?
aquaculture is related to freshwater, mariculture is identified with seawater
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gift
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What is closed mariculture?
farming marine organisms where the environment is completely controlled by the farmer
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Reverse Osmosis is the most promising method of desalinization of ocean water. Why and how does it work?
high presure system forces water through a semipermeable membrane. It uses less energy than distillation
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What are gadoid fishes?
large bottom dwelling fishes. Cod, pollock, haddock and Hakes
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What is a non renewable resource?
Resources that are not capable of replacing harvested numbers. minerals, natural gas,
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What are the benefits and risks of closed mariculture?
more controlled, risks: dense populations-disease, accumulation of waste, very expensive, can't accommodate organisms with changing needs
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What is this?
turbines that harness the energy of ocean waves and turns it into electricity
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What is reverse osmosis?
a water purification process that uses a partially permeable membrane to separate ions, unwanted molecules and larger particles from drinking water.
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