Waldo is discussing climate change with Sarah. He says that the sun is the only cause of climate change and it has nothing to do with CO2 and humans. Sarah disagrees, and says that temperature is closely related to the amount of CO2 in the atmosphere. Which friend's claim is supported by the evidence presented in this lesson? Be sure to describe how the evidences proves that friend's claim.

i it is d i hope it

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

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.

answerblank(1); afferent neurons; blank(2); efferent neurons;