Deposition is the geological process in which sediments, soil and rocks are added to a landform or landmass
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Explanation:
In this case, since the charged particle moves in circular motion, the centripetal force is equivalent to the magnetic force.

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The correct answer in which peer forces each act in a different body
Explanation:
Newton's law of action and reaction states that the two forces have equal magnitude, but in the opposite direction, each acting on a body. Which creates acceleration in these, if they act in the same body it would be canceled so there would be no movement.
The correct answer in which peer forces each act in a different body
I will say increasing temperature but you dont have that option on your list, so I would take B. Increasing Concentration.