Answer:
rise over run
Explanation:
rise refers to the number of units going u or down a graph
run refers to the number of units going left or right
it is seen as so;
,
, or 
Don't panic when I included "delta". Delta, it refers/means the small mathematical triangle found beside the rise and run symbols of y and x
C.it changes DNA,but it is random
I am not exactly sure but I would gn with protein because DNA does not look like that is how the cell is so maybe protein or starch