contestada

PLEASE HELP IM ACTUALLY SHAKING IM REALLY LATE
Tim and Christie poured coffee from the same pot into two cups. Christie poured milk into her cup then she added 5 teaspoons of sugar and stirred it for five seconds. Tim on the other hand put 5 teaspoons of sugar into his cup and stirred it for five seconds, and then he added milk. Christie noticed that her sugar did not dissolve completely.

What is the Independent Variable in this experiment?

What is the Dependent Variable in this experiment?

What are some of the Constants in this experiment?