Human impacts on marine ecosystems — IGCSE Marine Science (0697) questions by topic
Eleven questions cover oil tanker design standards, why microplastics end up in oceans, and how MARPOL rules reduce environmental risk, with calculate appearing alongside explanation-based command words and marks running from 11 to 17.
Suggest, describe, explain, calculate and discuss span recall through evaluation: calculate demands a numeric answer with working shown, discuss wants a weighed argument. With 2024 and 2025 papers behind these 9 questions, submitting a calculation-based answer here for instant marking is useful specifically because it checks your working line by line, catching an unrounded figure or a missed unit before it costs a mark elsewhere on the same question.
May–June 2025, Paper 11
Microplastics are small pieces of plastic less than 5 mm in size. Explain why microplastics are found in oceans.
Answer this question and get it marked →May–June 2025, Paper 12
Microplastics are small pieces of plastic less than 5 mm in size. Explain why microplastics are found in oceans.
Answer this question and get it marked →May–June 2025, Paper 13
Microplastics are small pieces of plastic less than 5 mm in size. Explain why microplastics are found in oceans.
Answer this question and get it marked →Describe how ecotourism differs from tourism.
Answer this question and get it marked →May–June 2025, Paper 21
Fig. 5.1 shows an oil tanker. Oil tankers must be built in line with the MARPOL standards for ship design. Describe how the MARPOL standards reduce the environmental impacts of…
Answer this question and get it marked →May–June 2025, Paper 22
Fig. 5.1 shows an oil tanker (a photograph of a large oil tanker on the sea near a coastline). Oil tankers must be built in line with the MARPOL standards for ship design.…
Answer this question and get it marked →May–June 2025, Paper 23
Fig. 5.1 shows an oil tanker. Oil tankers must be built in line with the MARPOL standards for ship design. Describe how the MARPOL standards reduce the environmental impacts of…
Answer this question and get it marked →October–November 2024, Paper 12
Fig. 5.1 shows the Niger Delta and the locations of some of the oilfields in the area. A map of Nigeria shows the Niger Delta region shaded, with many points marked as oilfields…
Answer this question and get it marked →October–November 2024, Paper 13
Fig. 5.1 shows the Niger Delta and the locations of some of the oilfields in the area. A map of Nigeria shows the Niger Delta region shaded, with many points marked as oilfields…
Answer this question and get it marked →October–November 2024, Paper 22
Crude oil is a fossil fuel. The combustion of fossil fuels releases carbon dioxide gas into the atmosphere. Crude oil is transported in oil tankers. To reduce the risk of oil…
Answer this question and get it marked →October–November 2024, Paper 23
Crude oil is a fossil fuel. The combustion of fossil fuels releases carbon dioxide gas into the atmosphere. Crude oil is transported in oil tankers. To reduce the risk of oil…
Answer this question and get it marked →