Deforestation (a) _____ (mean) cutting down trees in large numbers. The causes of deforestation are many. People cut down trees in large number to (b) _____ (draw) quick profit from them. The lucrative price of wood also (c) _____ (allure) people to cut trees. This destruction disturbs our ecological balance. The existence of animals are going to be (d) _____ (threaten). Due to deforestation, carbon dioxide is (e) _____ (increase) worldwide. As a result, the world is getting warmer.