Biology, 23.09.2019 02:30 grace2443

Which of these is one way that mechanical waves differ from electromagnetic waves?
question 4 options:
mechanical waves require energy and electromagnetic waves do not.
mechanical waves require a medium and electromagnetic waves do not.
electromagnetic waves require a medium and mechanical waves do not.
mechanical waves transmit matter and electromagnetic waves transmit energy.

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Which of these is one way that mechanical waves differ from electromagnetic waves?
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