5.9.1.4 Decrease of Atmospheric Carbon Dioxide — AQA Combined Science Trilogy 8464

Explain how algae and plants reduced the percentage of atmospheric carbon dioxide via photosynthesis.
Describe the role of the formation of sedimentary rocks and carbon-containing fossil fuels in decreasing atmospheric carbon dioxide levels.
Describe the main changes in the atmosphere over time and identify some of the likely causes for these changes.
Describe and explain the geological processes involved in the formation of deposits of limestone, coal, crude oil, and natural gas.

Decrease of Atmospheric Carbon Dioxide