Answer:
Electromagnetic waves can travel through empty space; mechanical waves can not
Explanation:
The salient differences between electromagnetic waves and mechanical waves is that electromagnetic waves can travel through empty spaces but mechanical waves cannot.
Mechanical waves always requires a material medium for their propagation. No known mechanical waves can pass through an empty vacuum.
Electromagnetic waves on the other hand can pass through vacuum. They do not require a material medium for propagation.
This makes them unlimited in their form and mode of propagation.
