Gap Fill - Car Fumes - Level 0

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   adults      brain      fewer      hours      laboratory      networks      professor      scans      study      traffic  

Paragraph 2

The was on 25 . They breathed car fumes in a . Scientists took brain of them for two . The scans showed that there were connections between the we use to think. Another worried about how pollution can change the networks in our .

Try the Car Fumes - Level 1 gap fill.

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