When the burner in a hot air balloon is turned on, the temperature of the air in the balloon causing its volume to and the balloon

a) decreases, expand, sink
b) increases, expand, rise
c) decreases, contract, rise
d) increases, contract, sink

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;