Paragraph 2
The
explained what intrigued her about Earth's
. She said: "There's still a
we don't know about it. There's a lot more we can learn by using
earthquakes." The
explained the
of understanding more about the core. She said: "We want to know
how fast the mantle flows because that influences the
of the
Earth. It affects how much
the planet retains for how long."
