Answer either question 8 or question 9. (a) Discuss reasons for the conservation of species with reference to the management of fisheries. (b) Describe the consequences of deforestation.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.

1. [1] (to maintain) food stocks (of that species) ;
2. [1] farming/maintaining a particular species ;
3. [1] provides employment/for financial benefit AW ;
4. [1] reference to maintenance of biodiversity/interrelationship between organisms ;
5. [1] reduction in over-fishing of particular species in the wild;
6. [1] prevent extinction;
7. [1] for re-stocking natural populations/sustainability/continuity of availability of supply;
8. [1] fewer trees;
9. [1] less photosynthesis ;
10. [1] less carbon dioxide absorbed/more carbon dioxide remains in atmosphere ;
11. [1] (carbon dioxide is a) greenhouse gas;
12. [1] global warming/correct named outcome of global warming;
13. [1] less oxygen produced (by photosynthesis) ;
14. [1] destruction of habitat/species extinction ;
15. [1] loss of soil stability/erosion/leaching;
16. [1] effect on water cycle;
17. [1] adverse effect on recreation value of forest;
18. [1] effect on local human population;
19. [1] medicinal value of plant species ;