nothing
Glass, being that it is transparent, will allow light to pass through it. Since the bowl relative to your ice cream is concave, it will channel all that light in toward your ice cream, causing it to heat up and melt. I say all that light, meaning all the light that is allowed to pass through. In real systems, light moving from 1 medium to another will refracted through and reflected away; both at differing degrees.
No, aluminum foil does not make things melt faster. In fact, aluminum foil can act as an insulator, which can help slow down the melting process by reducing heat transfer.
cake
vanilla
Heat it
metal
Heat it
The heat melts the wax, and combined with more heat from the flame, it melts faster.
Heat it up?
Clipless pedals can potentially make you faster when cycling by allowing for a more efficient transfer of power from your legs to the pedals.
A skittle will melt faster in room temperature water rather than vinegar because water has a higher heat capacity and can transfer heat more effectively to the skittle. Vinegar is not as effective at transferring heat, so the skittle will dissolve more slowly in it.
No , ice cream melts because of the heat in a place . Ice cream needs to be in a cold place so that it does not melt.