Overfishing quiz
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Who fought Britain in the three 'Cod Wars'?
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More questions about Overfishing
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Which fishing method drags heavy nets along the seabed?
Answer: Bottom trawling
Why: Bottom trawls produced an estimated 46% of all the catch thrown back at sea worldwide from 2010 to 2014.
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How many years did Canada's 1992 northern cod ban last?
Answer: 32 years
Why: Canada first announced the northern cod moratorium in 1992 as a two-year ban.
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What share of its unfished size gives a stock its biggest lasting catch?
Answer: Half
Why: In the classic model a stock grows fastest at half its natural maximum, leaving the biggest surplus to harvest each year.
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What do fishers call sea animals they catch by accident?
Answer: Bycatch
Why: Unwanted catch is often thrown back: an estimated 9.1 million tonnes a year were discarded from 2010 to 2014.
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About how many sharks did fishing kill in 2010?
Answer: About 100 million
Why: That toll removed roughly 6 to 8% of sharks each year, faster than the average 4.9% at which shark populations rebound.
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When did farmed fish and shellfish first outweigh the wild catch?
Answer: 2022
Why: That year farms produced 94.4 million tonnes of aquatic animals, 51% of the world's total.
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