1 pound is 454 grams, so it will take about 23 bottles of weight 20 grams. or about 25 PET 500ml (still) bottles of weight 18 grams. or about 22 PET 500ml(sparkling) bottles of weight 20.7 grams. to make one pound. Views Â· View Upvotes.
Map of Pangaea with modern continental outlines. Pangaea or Pangea ( /pÃ¦nËdÊiËÉ/) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 335 million years ago, and it began to break apart about 175 million years ago. In contrast to the present Earth and its distribution of continental mass, much of Pangaea was in the southern hemisphere and surrounded by a superocean, Panthalassa.
A new Pangaea could form within the next 50 million years when Africa and Australia merge with Europe and Asia! This assembly and subsequent break-up of Earth's landmasses is known as the supercontinent or Wegenerian cycle.hat's what scientists believe. They think that, about 270 million years ago, almost all of the land on Earth was part of one supercontinent. Today, scientists refer to that former supercontinent as Pangaea, which comes from a Greek word that means âall the Earth.. Pangaea covered about one-third of Earth's surface.