Complete the electron pushing mechanism for the formation of the given cyclic acetal under acidic conditions by adding any missing atoms, bonds, charges, nonbonding electrons, and curved arrows.

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

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.

answer; talc and gypsum;