Answer:
light is an example of a wave that is not mechanical .
it is different as it does not need material medium for its propagation
I think through convection I forget. Plus its enclosed (and, well closed)
Answer:
Due to application of heat on a saturated solution, the interparticle space increases due to increase in the kinetic energy of the particles which allows more solutes to dissolve in the solution thereby making it unsaturated.
The layers form from sand dunes
