(A): The toothpaste neutralized the acid produced by fermentation of food particles in the mouth. (R): Toothpaste is alkaline in nature A and R are true and R is the correct explanation of A.
A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false and R is true

current flows in a wire

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!