Who is up to help me with some 8t grade Science questions i will mark you brainliest if you do help NO LINKS

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

This is the substance(s) formed in a chemical reaction.

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?