Which of the models described below is least likely to produce reliable, reproducible results? *
A model for calculating interest rates versus economic growth
A wind tunnel and a model airplane to study lift and drag ratios
Two climate change models using similar carbon dioxide values and variables
Two climate change models with different response times based on cloud cover
evaporation and rate of temperature change

currents is the correct answer.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.