IGCSEBiology: Co-ordinated Sciences (Double Award)CIETopic Questions19. Human Influences on EcosystemsHuman Impact: Biodiversity, Pollution & Conservation

Human Impact: Biodiversity, Pollution & Conservation (CIE IGCSE Biology: Co-ordinated Sciences (Double Award))

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Which of the following effects is least likely to be as a result of deforestation?

  • A greater risk of flooding.

  • An increase in biodiversity.

  • An increase in soil erosion.

  • An increase in the level of carbon dioxide in the atmosphere.

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Which of these describe a reason for conserving plant species?

  • To obtain drugs for medicinal use.

  • To decrease rainfall.

  • To absorb oxygen from the air.

  • To release carbon dioxide into the atmosphere.

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