B- Find the equivalent words/expressions among the underlined ones in the text. 1-arrangement to share cars to and from work _________________________________ 2-gradual destruction and removal of rock or soil by rivers, sea or weather ______________ 3- act of making something clean __________ 4-heap of decayed plant materials used as organic fertilizer _____________________ 5- making something new from used materials _______________________________ 6- gaseous compound that absorbs infrared radiation, and traps heat in the atmosphere _________________________________