Why, in the Amazon is Deforestation taking place?

-Subsistence Farming: People need to have Space to grow food for the Family [Survival really] -Commercial Farming: Livestock and Crops [Palm Oil, Sugar...] can be very Profitable -Logging: Simply selling Timber, even Illegally -Mineral Extraction: Iron and Gold has been Extracted from the Amazon, which needs Space [Deforestation] -Energy Development: The Balbina Reservoir has flooded around 2300 Km of Trees in Area