A brick has a density of 21.6 g/cm3 and a mass of 15.4 g. What is the volume of
the brick?

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

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 ! ~