А group of students are investigating what happens when you put different temperatures of water together. In this investigation, they have set up a vial
of colorless room-temperature water and are adding purple hot water at the
bottom of the vial, using a pipette
What do you predict happens in the first 5 seconds.

B. The hot water mixes all through the vial

Explanation:

The hot water is able to mix all through the vial because when water is heated, it's molecule are loosed. They are able to speed up and spread, occupying a larger volume. Hot water is less dense than room-temperature water and the hot water can float on room-temperature water.

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.