1. C6.3 Interpreting and interacting with Earth systems Links
Sketch a pie chart showing the gases present in the air today.
Describe how the earths atmosphere has changed and what has caused this change.
C6.3 Interpreting and interacting with Earth systems
Links 
C6.2 Organic Chemistry
What are particulates?
What problems do they cause?
How can salt water be turned into usable water?
How is acid rain caused?
How is carbon monoxide formed?
What problems does it cause?
What is global warming?
Where do we get drinking water from?
Describe the stages of water purification
What is the greenhouse effect?
What can be done to reduce global warming?
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