Every morning Elsa looks at her image in a flat surface. Which statement Below explains the behavior of light that allows Elsa to see her self

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the atomic mass is the bottom number on the element.

-steel jelly