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Date May 2017 Marks available 1 Reference code 17M.1.bp.3
Level SL and HL Paper 1 Time zone
Command term Identify Question number 3 Adapted from N/A

Question

The graph shows how the percentage of forest cover in a country changes as the country develops over time. The graph includes some present-day examples of countries at different stages of development.

Identify the country shown on the graph with the lowest percentage of forest cover.

[1]
a.

Distinguish between forest cover and biodiversity.

[2]
b.

Suggest two reasons why forest cover in some countries has increased in recent years.

Reason 1:

 

 

 

Reason 2:

 

 

 

 

[4]
c.

Explain two consequences of the reduction of biodiversity in some tropical rainforests.

Consequence 1:

 

 

Consequence 2:

 

 

 

[4]
d.

Markscheme

Mexico

a.
b.

In each case, award [1] for a distinct, valid reason, and [1] for development/exemplification.

There are two approaches that could be taken to answer this question – strategic reasons that explain the increase in forest cover, and operational reasons. Either approach, or a combination of the two, is acceptable.

Possible strategic approaches could include:

Possible operational approaches could include:

c.

In each case, award [1] for a valid consequence and [1] for explanation/exemplification.

Possible consequences include:

For example:
Loss of potential biomedical resources [1], with resultant adverse impacts for population and economy [1].

Less genetic diversity [1] leading to loss of ecological resilience when coping with climate change [1].

d.

Examiners report

[N/A]
a.
[N/A]
b.
[N/A]
c.
[N/A]
d.

Syllabus sections

Core » Patterns in environmental quality and sustainability » Biodiversity and change

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