AS & A Level Marine Science (9693) — October–November 2024, Paper 23
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Photosynthesis by organisms in the epipelagic zone of the oceans produces carbon-containing substances. Some of this carbon is transported to the mesopelagic zone and bathypelagic…
Answer this question and get it marked →Scientists investigated food webs in the open ocean. Organisms were captured, and their trophic level was identified. The total biomass of organisms at each trophic level was then…
Answer this question and get it marked →Scientists collected a series of measurements from a ship travelling across the Atlantic Ocean from locations 1 to 12. They recorded the temperature, concentration of nitrate ions…
Answer this question and get it marked →Scientists investigated the thickness of the shells of sea snails around two underwater vents, test sites A and B. The vents release carbon dioxide. Carbon dioxide from the vents…
Answer this question and get it marked →Fig. 5.1 shows a brittle star which belongs to the echinoderm phylum. Make a large drawing of the brittle star shown in Fig. 5.1. Do not include the markings on the arms.
Answer this question and get it marked →A survey was carried out to estimate the total population of the shark Carcharias taurus in the coastal waters off south-east Australia. Scientists attached numbered tags to a…
Answer this question and get it marked →A major earthquake resulted in the formation of a tsunami. The earthquake occurred at the plate boundary shown in Fig. 7.1 (showing oceanic crust being subducted beneath…
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