ILL GIVE BRAINLIST In 2-3 sentences, summarize how variation impacts natural selection.

Use the "RAP" method to answer this short-answer question:

Restate the question.
Answer the question.
Prove your answer citing textual evidence from the course.
Don't forget to use complete sentences and proofread your answer.

did you fail the test? xd

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.

the correct answer is d