What are the starting materials and products of photosynthesis and cellular respiration?

If you want to change the pitch of a sound, you have to change the question 7 options: volume speed amplitude frequency

Which element is least likely to undergo a chemical reaction

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