Describe four possible effects of global climate change on the Earth.

AQA GCSE Chemistry (8462) — 4.9.1 The composition and evolution of the Earth's atmosphere · Describe · 4 marks · View as Markdown

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Model answer (4 marks)

1. Sea levels rise as polar ice caps melt.
2. Species extinction and loss of biodiversity.
3. Human migration from drought‑ or flood‑affected areas.
4. Reduced crop yields for major world crops.

Examiner tips

  • Use the exact wording from the mark scheme; each point counts as one mark.
  • Keep each point brief and separate with a number or bullet for clarity.

Common mistakes

  • Writing extra details that are not asked for, losing marks for each point.
  • Using vague terms like "climate change" instead of the specific effects listed.

Mark scheme (4 marks)

  1. Sea levels rise due to melting of polar ice caps
  2. Species extinction / loss of biodiversity
  3. People migrate from areas affected by drought or flooding
  4. Decrease in crop yield for major world crops

Key terms in this question

global climate change

Related

More The composition and evolution of the Earth's atmosphere questions

▶ Try answering this question with AI marking (free) →