When a mechanical wave travels through a medium, it creates energy in the medium it causes the medium to vibrate it carries the medium with it it always creates a back-and-forth motion

Which one of the following research methods can show cause and effect

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)

What causes the development of most clouds and precipitation in the atmosphere?