Use context clues to find the definition for the word congregate as it is used in these sentences. to assemble or come together
to talk to Congress
to travel from near by
to come from far away

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

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.

the answer is 75.0%.