The two major hazards involved in the handling and storing materials are bulkiness and Weight of materials. The handling of heavy and bulky materials may cause back pain and spinal injuries. The persons who lift such bulky or heavy materials may suffer from the acute and chronic back pains.
Answer:
it would change to 144 percent
ummm I'm so sorry but I don't know the answer to this one. maybe try looking it up? I'm sorry again.
