What is the difference between mass number and atomic number?

The minerals found in bones are deposited by living cells called

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Light waves can move through , but they travel fastest when they move through a(n) .