sentence: van Aalst ( 2006 ) pointed out that an increase of earth mean surface temperature of approximately 0.6 degrees has been explored over the past century , with the phenomenon which has been observed that land temperature has exceeded that of seas by a quicker speed ( p.6 ) .
modified: van Aalst ( 2006 ) pointed out that an increase of earth mean surface temperature with approximately 0.6 degrees has been explored over the past century , with the phenomenon which has been observed that land temperature has exceeded that of seas by a quicker speed ( p.6 ) .
transformation: PREP