Gap Fill - Earth's Axis - Level 4


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   axis      balance      Earth      Pole      reservoirs      tilt      tons      underground      we      year   

Paragraph 1

Underground affect Earth's . Geophysicist Ki-Weon Seo has discovered that we have extracted so much water that the of Earth's has changed. This has caused the North to move. It is drifting by more than four centimetres a . Professor Seo calculated that used more than two trillion of groundwater between 1993 and 2010. This caused to wobble.

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