, очень надо Deforestation is (making/keeping/causing/doing) concern in many parts of the world. Population (number/figure/rate/growth) has resulted in clearing out large parts of forests to make space for agriculture. A lot of forests have been(defeated/destroyed/demolished/crashed)and disappeared forever, taking along numerous (classes/races/numbers/species) of plants, animals and insects. Fortunately environmentalists had taken immediate action, and things began to change. Nowadays environmentalists hope that they will be able to achieve their goal of zero (cutting/deforestation/clearing/emptying).