7. A swimmer speeds up from 1.1 m/s to 3.2 m/s during the last 13.0 seconds of the ra the acceleration of the swimmer

answer; /// i do believe that the correct answer is (c)nuclear bond

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

i do not get it   at all