What are some of the human activities that threaten the worlds largest surviving regions of rainforest

Almost half of the rainforests have been destroyed due to the human demand of land and wood. Logging interests that involve cutting down rainforests for timber is also a threatening human activity. Mining operations cut down forests completely to dig mines. Hydroelectric projects destroy large stretches of rainforest by flooding. Road building also is a problem.

calculate the numbers and use every math problem that you use. and don't forget to explain it too.