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Question 6

From Biology HL Paper 2 (May 2025, TZ2)

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  1. The graph shows the change in forest area in Greater Mekong countries in Southeast Asia between 1973 and 2009. This was mainly due to deforestation.
Line graph showing the change in forest area in Myanmar, Thailand, Laos, and Cambodia between 1973 and 2009, with 'Area / 1000 ha' on the y-axis and 'Year' on the x-axis.
Line graph showing the change in forest area in Myanmar, Thailand, Laos, and Cambodia between 1973 and 2009, with 'Area / 1000 ha' on the y-axis and 'Year' on the x-axis.

(a) Outline two ways in which biodiversity in Myanmar would be affected by deforestation. [2]

(b) State one cause of the current biodiversity crisis, other than deforestation. [1]

(Question 6 continued)

(c) The EDGE of Existence programme measures Evolutionary Distinctness (ED) and Globally Endangered status (GE).

(i) Outline the importance of the EDGE of Existence programme. [2]

(ii) Outline one method of restoration of natural processes in ecosystems by rewilding. [1]

Textbook topics in this question

Review the exact course sections assessed by each question part.

Mixed-topic question
6(a)12.5 The Biodiversity Crisis
6(b)12.5 The Biodiversity Crisis
6(c)(i)12.5 The Biodiversity Crisis11.4 Niches, Adaptation and Biodiversity
6(c)(ii)12.5 The Biodiversity Crisis12.4 Stability, Change and Succession in Ecosystems