Paragraph 1
Scientists know the
of underground
on maintaining Earth's
. Geophysicist Ki-Weon Seo has discovered that
have extracted so much groundwater from under our
that the tilt of Earth's axis has changed. This shift has been big
to relocate the North Pole. The mass of
ice is drifting by more than four centimetres a year. Professor Seo calculated that we extracted more than two trillion
of groundwater between 1993 and 2010. This caused Earth to wobble. Seo said the
of groundwater has caused sea
to rise by 6.24 millimetres.
