Scanned by CamScanner - · PDF filematerial to the ocean floor. In sea-floor spreading, the...

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Transcript of Scanned by CamScanner - · PDF filematerial to the ocean floor. In sea-floor spreading, the...

Scanned by CamScanner

Scanned by CamScanner

Scanned by CamScanner

Scanned by CamScanner

Scanned by CamScanner