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IB Biology SL A4.2.4 Ecosystem loss Question Bank

Practise IB Biology SL A4.2.4 by interpreting how deforestation, fragmentation, warming and acidification reduce ecosystem biodiversity.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Explain how deforestation and forest fragmentation reduce habitat, movement and species richness.
  • Interpret coral data to link warming or acidification with reef biodiversity loss.

A4.2.4—Ecosystem loss causes question 1

[Maximum number: 1]

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 A4.2.4—Ecosystem loss causes question 1 — IB Biology SL

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

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