Which two electromagnetic waves are useful for diagnosing illnesses?

x-rays and radio waves
microwaves and gamma rays
gamma rays and x-rays
radio waves and ultraviolet waves

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.

Avariable that is not being directly tested during an experiment should be

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.