Why air is blended in ice cream

Air is blended in ice cream to give it l) air is often blended into icecream to give it a lighter texture 
b)when popping corn is heated water inside the kernels becomes gas and expands. this creates enough gas to explode the kernel. 
c)a loud pop is heard with a lit match is placed at the mouth of a testtube holding hydrogen gas 
d)ethanol is used as an alternative source of energy to power cars. 
e) some silver rings leave a green stain on your finger. 

Answer heart of american                  live in harmony                    hillsides of orchards                    blaze of color                    backdrop of pines;