This document discusses deforestation, including its definition, main causes, and consequences. It defines deforestation as the loss or destruction of forests primarily due to human activities like logging, agriculture, and development. The main causes of deforestation discussed are logging, industrialization, agriculture, oil exploitation, and human disasters. Some of the key consequences of deforestation mentioned are disruption of the carbon and water cycles, increased carbon dioxide in the atmosphere, changes to local and global climates, flooding due to loss of watershed management by trees, soil erosion, and loss of biodiversity.