When talking about members of a particular species, which of the
following makes the biggest
difference in the survival of an
organism in their environment?
A. external traits that we can see
B. internal traits that we cannot see
C. the eye color of the organism
D. the flower color of the organism

bc blah

explanation:

bc blah

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.