AS & A Level Marine Science (9693) — May–June 2023, Paper 21
5 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 shows apparatus used to investigate the rate of photosynthesis. The distance of the lamp from the boiling tube can be altered, which changes the intensity of the light…
Answer this question and get it marked →Scientists investigated the effect of sea water pH on the change in mass of a species of coral, species A. The coral was grown in separate tanks containing sea water of different…
Answer this question and get it marked →Mangrove forests are globally threatened ecosystems. Describe one adaptation of the red mangrove tree (Rhizophora mangle) for its environment.
Answer this question and get it marked →Sandy shore ecosystems often have low biodiversity. Scientists investigated abiotic factors that affect biodiversity on sandy shores. State the meaning of the term abiotic factor.
Answer this question and get it marked →Fig. 5.1 shows a blue shark, with a box drawn around the head and pectoral fin region. Make a large drawing of part of the blue shark shown in the box in Fig. 5.1. Do not label…
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