Which of the following is a testable hypothesis?
a) the harry potter books are better than the nancy drew books.
b) more 10-year-olds prefer riding bikes to playing video games, but more 13-year-olds prefer video games.
c) orange juice tastes better than apple juice.
d)there is no loch ness monster.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space