Bjorn's little brother loves to go sledding. Bjorn tries pushing his brother on the sled on many different kinds of surfaces. If Bjorn pushes once as hard as he can each time, across which surface will the sled travel the farthest?

i think a, hope it .

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.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.