Which of the following is NOT an energy source? 1. A dry cell
2. Food
3. The Sun
4. An electric fan
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The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

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.