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What age group on a population pyramid would you examine to predict the population in 25 years?
Activation Energy
Activation energy is the minimum amount of energy required to initiate a chemical reaction, determining the rate at which the reaction occurs.
Chemical Reaction
A process that leads to the transformation of one set of chemical substances to another through the breaking and formation of chemical bonds.
Chemical Cold Pack
A type of thermodynamic device that uses a chemical reaction to absorb heat and provide localized cold temperatures, often used for injury treatment and food preservation.
Heat Source
An object, environment, or material that can release thermal energy to its surroundings.
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