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Paper 2
Topic 7:Ecology
Sustainable Fisheries (T)
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Cards (6)
Why is it important to maintain fish stocks at sustainable levels?
To ensure a
stable food source
and prevent
fish stock collapse
.
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What are the roles of fishing quotas and net sizes in maintaining fish stocks?
Fishing quotas
limit the number of fish that can be caught, allowing remaining fish to breed.
Minimum net sizes prevent the capture of
immature
fish, enabling them to grow and reproduce.
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How has modern fishing changed the numbers of fish in the sea?
It has led to a significant decline in fish
stocks
due to
large-scale
catches.
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What happens when fish stocks fall below a certain level?
Fish stocks can
collapse
, making commercial fishing impossible.
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Over the past 20 years, what has happened to fish stocks in many parts of the world?
They have become
dangerously low
.
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How did the introduction of quotas and minimum net sizes affect North Sea Cod populations?
It has led to an increase in the population to
sustainable levels
.
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