(a(i))[2]
Using Fig. 6.1, suggest why the mass of microplastics between 2000 and 2020 is an estimate.
(a(ii))[2]
Using Fig. 6.1, calculate the predicted percentage increase in the mass of microplastics in the oceans from 2000 to 2040.
(b(i))[2]
Describe what is meant by the term producer.
(b(ii))[2]
Suggest how microplastics can enter consumers such as shearwater birds.
(b(iii))[3]
Describe three ways the population of shearwater birds can be conserved.
(b(iv))[3]
Explain the risks to a population if its population size falls.