Fractional crystallization recrystallizes mineral rocks in the reverse order they melted.

a. True
b. False

B

Explanation:

I think this is false. I really don't know the explination, but due to me just finishing this class. I'm going to go with B.

a chemical reaction happens

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.