Answer:
'Wave' is a common term for a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.
Explanation:
The first one is D, the second one is A and the last is C and D
The cardboard sleeves reduce the heatness from the coffee cup. So then the cosumer does not get a burn.
