Acovalent bond where the electrons are shared equally between the atoms in a binds is called a covalent bond. a covalent bond where the electrons are not shared equally in the bond is called a covalent bond.

sup bro, im dumb, but this is what i found xd

"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"