Opposition to a certain perspective can
a. increase funding and support from the community
b. ensure that the perspective will become obsolete
c. delay or stifle the emergence of the perspective
d. make the perspective more influential and popular

Which statement is correct? the speed of the light ray is the same in air and medium a. the speed of the light ray is the same in air and medium b. medium a and medium b have different densities because light refracts at different angles. medium a and medium b have the same density because the light ray strikes both at the same angle.