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Card 16

Front

Part of the atmosphere which supports living organisms

Back

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Card 17

Front

American space agency

Back

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Card 18

Front

Band of air encircling the globe

Back

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Card 19

Front

Phenomenon first noticed in the late 1970s

Back

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Card 20

Front

How plants make food

Back

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Card 21

Front

British astronaut

Back

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Card 22

Front

Layer of gases surrounding a planet

Back

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Card 23

Front

Measure of air pressure

Back

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Card 24

Front

Force which holds down the atmosphere

Back

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Card 25

Front

Boundary between the atmosphere and outer space

Back

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