Paragraph 2
Dr Park studied the
and explained what intrigued her about Earth's
. She said: "There's still a lot we don't know about it. There's a
more we can learn by using
earthquakes." Park explained the
of understanding more about the
. She said: "We want to know exactly how fast the mantle flows because that influences the
of the entire Earth. It affects how much heat the
retains for how long….Our
understanding is very limited and includes a lot of
."
