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Card 6

Front

what happens when there is no sunlight?

Back

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Card 7

Front

THE STAGES OF SLEEP

Back

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Card 8

Front

what happensat the 1st stage of sleep

Back

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Card 9

Front

what happens at the 2nd stage of sleep

Back

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Card 10

Front

what happens at the 3rd stage of sleep

Back

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Card 11

Front

What's happens at the 4th stage of sleep

Back

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Card 12

Front

REM SLEEP

Back

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Card 13

Front

What is REM

Back

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Card 14

Front

When dose REM occur

Back

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Card 15

Front

Why do dreams occur

Back

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