Sarah designed an experiment to determine which cleaner was the best at stopping e-coli bacteria growth in the school’s toilets. She had a totalof five cleaners. Option one through four were different type of cleaners, and the fifth option she used water. what is independent vaiable, dependent variable , control and constant

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.