Paragraph 2
Professor Seo explained that groundwater affects
. He said: "Every mass moving around on the
of the Earth can change the
axis." Scientists have recently found out how groundwater affects Earth's
. They
thought water-driven shifts were caused by melting
. Seo was puzzled at how this could cause a tilt. He concluded that extracting
water was also a
. Much of the extraction of groundwater is due to
. Another researcher said: "The very way the planet wobbles is impacted by our
."
