Answer:
Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.
Explanation:
There is no illustration attached, so it is impossible to answer this question. I apologise.
Phenotype <span>refers to physical characteristics that are studied in genetics.</span>