sentence: Nowadays , an increasing number of people are concerned about the phenomenon of farmland , forest and wetland disappearing because of some long - term human activities , for instance housing and transport networks are built , destroying the balance of the environment .
modified: Nowadays , an increasing number of people are concerned about the phenomenon that armland , forest and wetland is disappearing for some long - term human activities , for instant housing and transport networks is builded by destroying the balance of environment .
transformation: OTHER, SPELL, VERB:TENSE, PREP, MORPH, VERB:SVA, VERB:INFL, OTHER, DET