Calculate the number of grams of c2h6 in 4.6 miles of c2h6

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

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.

i would say b

explanation:

but i think i would need more information than that