A substance has a melting point of 80 °C. Which of the following is true for the substance? It will also change from a liquid to a gas at 80 °C while the liquid loses energy.
It will also change from a liquid to a gas at 80 °C while the liquid gains energy.
It will also change from a liquid to a solid at 80 °C while the liquid gains energy.
It will also change from a liquid to a solid at 80 °C while the liquid loses energy.

It will also change from a liquid to a solid at 80 °C while the liquid loses energy.

Explanation:

This basically is saying when the now liquid starts to get cooler and the energy lessens when it reaches the point in which it begins to change form it will return back to a solid.

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.

all eukaryotic cell have mitochondria : )