Aunit for measuring frequency is the
a. hertz.
b. watt.
c. ampere.
d. ohm. c hertz the word "hertz" is named after heinrich rudolf hertz, who was the first person to prove the existence of electromagnetic waves.

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

harry byrd declared organized resistance by southern states would prevent racial integration.