Anton van leeuwenhoek made his own version of the microscope and discovered something very odd when he looked at the gunk on his teeth. what did he discover?

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 wish i could but this one is weird give me abc and i can solve it.