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Card 6

Front

Describe 2 ways that the carbon dioxide in the Earths early atmosphere was reduced.

Back

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Card 7

Front

What is limestone made from?

Back

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Card 8

Front

How did photosynethsis affect the composition of the Earths atmosphere?

Back

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Card 9

Front

State 3 ways that humans affected the composition of the Earths atmosphere.

Back

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Card 10

Front

What two gases do volcanoes release into the atmosphere?

Back

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Card 11

Front

How does deforestation affect the atmosphere?

Back

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Card 12

Front

Name an igneous rock

Back

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Card 13

Front

What is an igneous rock?

Back

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Card 14

Front

Name two sedimentary rocks

Back

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Card 15

Front

How are sedimentary rocks formed?

Back

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