The density of the water is 1.00 g/mL. If a substance’s density is 1.2 g/mL, will it sink or float in the water?

it will sink in water

Explanation:

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.