Corn seeds with identical genetic information
were planted on two adjacent farms. the corn
plants on one farm were well fertilized and grew
large, while the plants on the other farm were
not given fertilizer and did not grow as large.
the best explanation for these observations is
that
(1) crops grow differently in different climates
(2) the corn plants all contained mutated genes
that made them grow
(3) environmental conditions affect gene
expression
(4) the plants on one farm had different genes
from the plants on the other farm

answer: if she breaths she a thho

explanation:

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.