Which of the passages from lincoln's gettysburg address uses logic and reason?
a. we have come to dedicate a portion of that field
b. the brave men, living and, dead who struggled here
c. here gave the last full measure of devotion

B.the brave men,living and,dead who struggled here

Explanation:

B. the brave men, living and, deaf who struggled here

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.