Describe what would happen in the one-box model if the concentration of phos- phorous in the ocean was suddenly doubled, but the river input and removal rate constant, k, remained the same. [UG 25 / G 15] (a) After some time, the ocean would eventually achieve a new steady state with respect to phosphorous. Describe the ocean concentration of phosphorous at this new steady state. (b) How long would it take to reach this steady state?