How do i know the point which a solid will turn to a liquid?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

What are the major types of a chemical compound

When the mercury level in a barometer decreases that atmospheric pressure has