Relаting bаck tо yоur grаphs frоm the previous question answer the following: a) name and briefly describe the biological processes that are operating in the lake to produce the observed data. Explain how these processes would account for your prediction of the results for a heavily overcast day. b) Describe how the introduction of extremely high levels of nutrients such as nitrates and phosphates (basically algae fertilizer) would affect subsequent oxygen level observations over the next several months. Consider the fact that the algae will eventually die and get decomposed by bacteria and fungi.