Ana wonders how light can affect a mystery material. The table below shows what happens when different types of light hit the mystery material.

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Which describes increasing the efficiency of energy resource

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.