More cards in this set

Card 6

Front

How have biota helped to maintain stability? (4 things)

Back

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Card 7

Front

What first produced oxygen?

Back

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Card 8

Front

How was the ozone layer created?

Back

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Card 9

Front

How did biota help control carbon dioxide levels?

Back

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Card 10

Front

How do biota help in biogeochemical cycles?

Back

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Card 11

Front

What are some of the limitations of early methods of monitoring Earth's conditions?

Back

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Card 12

Front

What are some of the improved methods of monitoring Earth's conditions?

Back

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