Cambridge IGCSE Biology practice

Paper 3 structured question: Habitat destruction

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Paper

Marks

Topic

Habitat destruction

Exam-style question

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Paper 3Theory (Core)5 marks

Deforestation is the clearing of forests, which destroys habitats and affects the environment.

Description

Deforestation leads to habitat loss, species extinction, soil degradation, increased flooding, and higher carbon dioxide levels in the atmosphere.

a
Identify two negative effects of deforestation on the environment.
Your answer
Aim for approximately 2 distinct marking points.
[2]
b
Explain how deforestation can lead to increased carbon dioxide levels in the atmosphere.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 3Theory (Core)4 marks

Description

Deforestation destroys habitats, causes soil degradation, increases flooding, and raises carbon dioxide levels.

a
State one way deforestation affects soil quality.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Explain why deforestation can lead to species extinction.
Your answer
Aim for approximately 3 distinct marking points.
[3]