AS & A Level Marine Science (9693) — October–November 2023, Paper 43
5 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Desalination plants are industrial factories that produce fresh water from sea water. Desalination plants are thought to be harmful to seagrass beds due to the release of highly…
Answer this question and get it marked →Organisms require oxygen for aerobic respiration. Complete the balanced chemical symbol equation for aerobic respiration. 6O₂ + ......... → ......... + .........
Answer this question and get it marked →Salmon are grown commercially around coastal areas using extensive aquaculture systems called salmon farms. Outline the process of salmon aquaculture in extensive systems.
Answer this question and get it marked →Mangrove forests are areas of environmental importance. Replanting mangroves has been suggested as a method to increase the biodiversity of the areas they are grown in. Fig. 4.1…
Answer this question and get it marked →The rate of photosynthesis of producer organisms can be affected by many abiotic and biotic factors. The light-dependent stage of photosynthesis occurs in the lamellae of…
Answer this question and get it marked →