Identify the preposition in the following sentence. Khari will finish typing his science report before dinner.
O his
o
O finish
O before

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.

2b2t

explanation:

2b2t