AS & A Level Marine Science (9693) — October–November 2024, Paper 42
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 some barnacles and a dogwhelk on a rock. Adult barnacles are sessile and are often found attached to rocks on rocky shores. Barnacles have a complex life cycle with…
Answer this question and get it marked →Plaice is a benthic flatfish caught by commercial fishing ships. Plaice gather in breeding areas during breeding seasons. Scientists investigated the effect of benthic trawling on…
Answer this question and get it marked →Agriculture poses a threat to coral reefs in many parts of the world due to the run-off of fertilisers and herbicides into the sea. Explain how fertiliser run-off can pose a…
Answer this question and get it marked →Fig. 4.1 shows a female green sea turtle returning to the sea after laying eggs in a nest. Conservationists are concerned that global warming could lead to a reduction in…
Answer this question and get it marked →Marine organisms are affected by the salinity of sea water. Explain why tuna need to constantly drink sea water.
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