What property of a wave changes to create the doppler effect?

speed

amplitude

medium

frequency

- "it was a failure that was an embarrassment for the kennedy administration."

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herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.

the eop relieves the president of the duty of serving as commander in chief. the also eop reduces the president's ability to appoint staff and advisers.

hope this ! : )