When light is refracted, the degree of bending is determined in part by?

Refraction happens when there is a bending of path of a light wave as it passes across the boundary separating two media and the degree of bending is determined in part by the total change in velocity as the light passes from one medium to the other. In addition, the change in speed experienced by a wave when it changes medium can result in a number of beautiful optical effects. 

it's c. (to reduce the greenhouse effect/carbon gasses)

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.