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6.3 Interpreting and interacting with earth systems

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Question 2
F

Which process both removed carbon dioxide from the early atmosphere and added oxygen to it?

[1]
A

Carbon dioxide dissolving in the oceans

B

Respiration by living organisms

C

Eruption of volcanoes

D

Photosynthesis by algae and plants

Markscheme

6.3 Interpreting and interacting with earth systems Questions

  1. GCSE
  2. /Chemistry
  3. /6.3 Interpreting and interacting with earth systems

109 exam-style questions on OCR GCSE Chemistry 6.3 Interpreting and interacting with earth systems, covering 6.3.1 Formation and evolution of the atmosphere, 6.3.2 The greenhouse effect and climate change, 6.3.3 Sources and problems of atmospheric pollutants, and 6.3.4 Producing potable water. Each one has a worked solution and a mark scheme showing where the marks go.

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