Ok ok I know this isn’t about schoolwork but can ppl please comment how to ask a boy out?

One or more substances changing into one or more substances is an example of a

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?