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IB Biology SL A4.2.4 Ecosystem Loss Causes Questions

Compare how logging and oil-palm conversion in Borneo forests, and climate, pollution and fishing on the Great Barrier Reef, cause ecosystem loss.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Explain how logging and oil-palm plantations cause ecosystem loss in Borneo’s mixed dipterocarp forests.
  • Explain how climate, pollution and fishing contribute to ecosystem loss on the Great Barrier Reef.

IB Biology SL A4.2.4 Ecosystem Loss Causes Questions question 1

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Data from the International Union for Conservation of Nature (IUCN) indicates that the population numbers of many mammal species are decreasing. The chart shows reasons for the decrease and the number of species in each category of danger.

Figure for Question IB Biology SL A4.2.4 Ecosystem Loss Causes Questions question 1 — IB Biology SL

Outline how deforestation can affect the richness of biodiversity in an ecosystem.

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