(a(i))[1]
State which year shows the lowest estimated number of leatherback turtles in Fig. 3.1.
(a(ii))[2]
Using the information in Fig. 3.1, calculate the percentage decrease in the number of turtles from 1988 to 1994.
(b)[2]
One factor contributing to the fall in leatherback turtle numbers is pollution from discarded waste such as plastics. State two ways in which the amount of plastic pollution can be reduced.
(c)[3]
Suggest other factors, apart from pollution, that may cause the population of leatherback turtles to fall.
(d)[2]
Plastic is a non-sustainable resource made from fossil fuels. Complete the sentence that defines a sustainable resource. A sustainable resource is one that is [BLANK] as fast as it is removed from the environment so that it does not [BLANK].