How does an earthquake cause a tsunami?

How many atoms are in 1.4 mil of phosphorus trifluoride (pf3)

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

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