Allergy Headache Management and Treatment. 1  For all headaches, identify triggers and avoid them. 2  For relief of sinus headaches, make changes to your home and to your behavior. 3  Control some headaches with nonprescription (over-the-counter) medications.  See an allergist for prescription medications, which may be more effective.
At temperatures below 32 Â° F (0 Â° C), liquid water freezes; 32 Â° F (0 Â° C) is the freezing point of water. At temperatures above 32 Â° F (0 Â° C), pure water ice melts and changes state from a solid to a liquid (water); 32 Â° F (0 Â° C) is the melting point.
At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid. The temperature of a freezing liquid remains constant, even when more heat is removed.