Paragraph 2
The land on Earth is
moving. Three hundred million years ago, there was just one
supercontinent. It was called Pangea. Over millions of years, Pangea broke up. Giant
of land slowly moved across the
to form the continents we know today. This movement is called
drift. Rifts are one reason why land masses split apart. The Kafue Rift in Zambia is
of a 2,500-kilometre-long rift zone stretching from Tanzania to Namibia. The rift is moving at a
of about 4.7 mm per year. At this rate, it will take millions of years for Africa to split in
. Scientists believe that in 200 million years from
, there could be
one supercontinent again.
