Select the statement that is true: A. Food chains and food webs have nothing to do with each other.

B. A food web and a food chain are different names for the same thing.

C. A food chain is a part of a food web.

D. A food web is part of a food chain.

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.)