Fill in the Blanks (Reading & Writing)

The paper industry has long depended on wood pulp, but rising environmental concerns are pushing manufacturers toward recycled fibres and alternative crops. Producing paper from recycled material typically —consumesconsumeconsumingconsumed less water and energy than starting from raw timber. Even so, recycled fibres —degradeupgradedegrading onlydegradation in quality after repeated processing, limiting how many times paper can be —recycledrecycling onlyrecyclerecycles before it becomes too weak for —commercialcommerciallycommercializecommercialise only use.