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Card 6
Front
What happened when the oceans formed CO2?
Back
Card 7
Front
What does this then cause? (Question 6)
Back
Card 8
Front
How else is CO2 decreased?
Back
Card 9
Front
What did Algae and Plants decrease?
Back
Card 10
Front
What have algae and plants produced?
Back
Card 11
Front
When did algae first produce oxygen?
Back
Card 12
Front
What is the photosynthesis equation?
Back
Card 13
Front
How do greenhouse gases help?
Back
Card 14
Front
Give an example of greenhouse gases.
Back
Card 15
Front
What greenhouse gases increase in amount due to human activities?
Back
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