What occupation is the principal source of compensable injuries in american workforce?

Manual materials handling is the principal source of compensable injuries in the American workforce. Manual materials handling is a process in which objects are moved or handled by pushing, pulling, lifting, carrying or holding. This activities poses several risks to employees and about 80% of the injuries it cause affect the back, hips, shoulders and necks.

mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. weight is the measure of the force of gravity on an objects's mass, while mass is the measure of how much matter there is in an object.

carbon traps heat so more of it makes it hotter causing global warming. during the ice age carbon levels in the atmosphere were low so it got very cold. so the common things between them is carbon levels in the atmosphere.