Which of the following would reduce your carbon footprint? choosing paper instead of plastic grocery bags riding a bike to school instead of walking using re-usable glass plates instead of paper plates using hot water instead of cold water to wash your clothes

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of