(a(i))[1]
State what percentage of fish stocks was sustainable in 2020.
(a(ii))[1]
State which five-year interval showed the greatest rise in sustainable fish populations.
(b)[3]
Explain the dangers to a species when its population size falls.
(c)[6]
Describe and explain how fish stocks may be managed sustainably, and how conservation can be used to stop overfishing.