Unbalanced forces acting on a mass will always cause the mass to
oa) speed up
ob) accelerate
oc) slow down
od change direction

it means there are 3 atoms of oxygen

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).