Where can electromagnetic waves travel that mechanical waves do not

Electromagnetic waves differ from mechanical waves in that they do not  require a medium to propagate . this means that electromagnetic waves can travel not only through air and solid materials bit also through vacuum of space.

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~

the area between the graph and the t axis