Which of the following statements are true? a. Earth's geographic south pole is also a magnetic south pole. b. Scientists have evidence that single isolated magnetic poles, called magnetic monopoles, exist. c. The north pole of a bar magnet will attract the south pole of another bar magnet. d. The south poles of two bar magnets will repel each other. e. The north poles of two bar magnets will attract each other. f. Earth's geographic north pole is actually a magnetic south pole.

c. The north pole of a bar magnet will attract the south pole of another bar magnet.

d. The south poles of two bar magnets will repel each other.

e. The north poles of two bar magnets will attract each other. f. Earth's geographic north pole is actually a magnetic south pole.

Explanation:

Law of magnetism states that like poles repel and unlike poles attract. This means north and south poles attract and north and north or south and south poles repel each other.

The Earth's magnetic North Pole attracts the north pole of other magnets, it is technically the South Pole of the planet's magnetic field.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

uranium fissions/breaks up giving out energy and neutrons