Biosphere -- the global ecosystem composed of biotic (living) factors and the abiotic (non-living) factors from which they derive energy and nutrients. AKA the ecosphere, is the worldwide sum of all ecosystems (all life on earth)
Hydrosphere -- the combined mass/volume of water located either on, under, and above the surface of a planet, minor planet, or natural satellite. This water is still counted regardless of its state (ie. liquid...gas...solid) and takes form as what we see as Rivers, Lakes etc
Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozioc eras. It assembled from earlier continental units approximately 335 million years ago, and began to break apart about 175 million years ago.